Mikel Arteta did not hide his frustration with Arsenal's performance in Thursday's 2-2 draw with Sporting CP, but Fabio Vieira's display brought him a degree of pleasure.

The Gunners took the lead in the first half when William Saliba headed in from Vieira's corner, only for their hosts to level in similar circumstances just past the half-hour mark at the Jose Alvalade.

Paulinho put Sporting in front after the break with a tap-in, but Hidemasa Morita's own goal seven minutes later ultimately secured Arsenal a draw to take back to Emirates Stadium for the return leg of their Europa League last-16 tie.

The draw puts Arsenal – who have only lost at home twice all season – in a decent position ahead of the second leg, but Arteta feels they can do better, even considering the somewhat unfamiliar look to his starting XI.

"We are conceding too many simple goals," he told reporters.

"We spoke about the importance of boxes, especially in a competition where you're in or out. [On Thursday], we didn't defend that well enough, and we have to be better at threatening the opponents as well.

"But of course, you have an opponent there. We've played some really emotional games recently.

"We made a lot of changes and sometimes that takes time to get that cohesion, and you could feel it in the first 15 minutes that it needed some time to adapt and click.

"If we don't expose them, though, that's never going to happen."

He added: "When you concede two poor goals like we did away from home in Europe, it's very difficult to get a positive result.

"The game had different phases because we gave too many simple balls away in our own half and gave them the capacity to [exploit] transition moments, which they are good at.

"In other moments we had total control of the game and we lost a little bit of threat, especially with the four players we are missing in our frontline.

"There were some positives because we showed a lot of resilience to get back into the game, but we need to defend our box much better and be better on Sunday."

Vieira's performance was a surely one of those positives.

The Portugal international was given only his 13th start of the season, but his delivery for Saliba's opener was his sixth assist already – only Bukayo Saka (nine) has more for the Gunners this term, and he has played almost 1,600 minutes more than Vieira.

Arteta clearly values the former Porto midfielder.

"I'm really happy with him," he added. "I think he deserves more minutes than he's had, especially in the last two months.

"Obviously he had a difficult start because he was injured for two months after a surgery, and wasn't at the level that we want.

"You saw tonight he was probably our most dangerous player. He was always making things happen. He's a player that I absolutely love."

Manchester United got back on track with a 4-1 victory over Real Betis in the first leg of their Europa League round of 16 clash at Old Trafford.

Just days after humiliation at the hands of Liverpool, an unchanged United side responded fiercely to put one foot in the quarter-finals.

It was not all plain sailing for Erik ten Hag's side though, with Ayoze Perez equalising in the first half after Marcus Rashford gave the hosts an early need.

A strong second half put United in control though, as Antony guided home a trademark curler and Bruno Fernandes headed home to ensure a firm lead.

United came out of the blocks flying and, having already seen a Weghorst goal disallowed for offside, took the lead in the sixth minute as Rashford capped off a fine counter-attack to smash into the top corner. 

Claudio Bravo was called into action to deny Weghorst and Rashford, before Betis equalised against the run of play when Juanmi clipped a pass to Leicester City loanee Perez, who drilled into the far corner and give David de Gea no chance. 

Two minutes before the break, the visitors almost took the lead. De Gea sloppily gave the ball away to Juanmi, who fed a pass through to Perez, but United got away with it as his pass across the face of goal was deflected onto the post by Lisandro Martinez.

United retook the lead seven minutes after the restart, Antony cutting inside onto his left foot and curling beyond the reach of Bravo from outside the box.

The hosts' advantage was doubled just six minutes later, Fernandes finding space at the near post to head Luke Shaw's corner home despite Bravo getting both hands to the ball.

Bravo kept the scoreline respectable with a number of crucial saves but could do nothing as Weghorst tucked home on the rebound after Scott McTominay's effort was saved, with United on course for the quarter-finals.

Angel Di Maria scored the only goal of the game as Juventus beat Freiburg in the first leg of their Europa League last-16 encounter.

Juve registered a whopping 20 shots at the Allianz Stadium, where Di Maria's second-half header Bianconeri gave them a slender lead in the tie.

The Argentina international continued to shine in this competition, having netted a hat-trick against Nantes in the previous round.

Freiburg, who saw their five-match unbeaten streak halted, must come from behind when the teams recommence battle in Germany next week.

Massimiliano Allegri's decision to drop Paul Pogba from the squad for disciplinary reasons dominated the build-up to what was Juve's first Europa League showdown against German opposition since they faced Borussia Dortmund in the 1994-95 semi-finals.

Pogba's fellow France international Adrien Rabiot almost opened the scoring when he drew smart reflexes out of Mark Flekken, who also kept out Juan Cuadrado's free-kick.

Bremer then somehow failed to find an open goal in the 31st minute, the defender heading over Di Maria's deep corner from just two yards out, while Cuadrado stung Flekken's palms once more before the break.

Juve eventually made the breakthrough eight minutes into the second half, when Di Maria powered home a header from Filip Kostic's centre.

Freiburg thought they had responded in the 62nd minute but, following a consultation with the VAR, Lucas Holer's wonderful volley was ruled out as Matthias Ginter handled in the build-up.

Vincenzo Grifo was then marginally off target with a free-kick that represented the visitors' only recorded attempt on goal, as the Serie A side saw out a narrow victory.

Arsenal kept their hopes of winning a famous double on track with a fiery 2-2 draw in the first leg of their Europa League last-16 tie at Sporting CP on Thursday.

The Gunners took the lead, went behind and fought back to ensure it ended all square at Estadio Jose Alvalade in a four-goal encounter high on drama.

First-half headers from William Saliba and Goncalo Inacio left the two sides on level terms at the break, before Paulinho's tap-in had pushed Ruben Amorim's men in front.

But a Hidemasa Morita own goal just beyond the hour mark ensured Mikel Arteta's Premier League leaders will head into next week's second leg level with the Portuguese side.

On a humid evening, both teams started in cagey fashion, creating few clear-cut chances amid an atmosphere of simmering tension.

That taut mood increased in the 22nd minute when Saliba rose to power Fabio Vieira's corner home, with an off-the-ball altercation involving Oleksandr Zinchenko then sparking a minor melee.

Sporting refused to be cowed by their concession though, and took just a dozen minutes to strike back in near-identical fashion, with Inacio the man to divert a Marcus Edwards set-piece past Matt Turner.

The hosts then hit the front just 10 minutes after the restart, when Turner parried a Pote attempt straight to Paulinho, who fired home from close range.

Arsenal rose to the occasion once again though, albeit not without controversy after Bukayo Saka was adjudged to have been committed a foul in the build-up to Granit Xhaka's finish ricocheting in off Morita.

That left the tie nicely poised ahead of the return leg at Emirates Stadium next week.

Erik ten Hag has given his Manchester United players the chance to make amends for Sunday's annihilation at Liverpool by naming an unchanged XI for the visit of Real Betis.

United suffered the joint-worst competitive defeat in their history at Anfield, losing 7-0 as they found themselves on the end of a second-half blitz.

Ten Hag's men had arguably been the more threatening side in the first half, but after going into the interval a goal down, they capitulated in spectacular fashion and Liverpool ran riot.

Thursday's Europa League last-16 first leg provides United with the opportunity respond to that embarrassment, and Ten Hag surprisingly resisted the urge the drop any of those involved in Sunday's debacle.

David de Gea, Bruno Fernandes, Casemiro and Luke Shaw were the targets of particularly stinging criticism for their performances against the Reds, though they all kept their places.

Wout Weghorst also attracted the wrath of supporters after it emerged he touched the 'This Is Anfield' sign in the tunnel before kick-off, a gesture generally associated with Liverpool players rather than their opponents.

The Dutchman claimed he was trying to wind up international colleague Virgil van Dijk by preventing him from touching the sign. Weghorst also retained his place.

Betis – coached by former Manchester City boss Manuel Pellegrini – will be hoping to pile the misery on for United.

The Andalusians have had injury problems of late, however, with the talismanic figures of Nabil Fekir and Sergio Canales both absent.

Ex-City goalkeeper Claudio Bravo was named between the posts, while Ayoze Perez – on loan from Leicester City – was selected in attack alongside Betis' 41-year-old captain Joaquin.

Paul Pogba has been dropped by Juventus for Thursday's Europa League clash with Freiburg in Turin.

The France international was reportedly late for a team meeting on Wednesday and was not included in Massimiliano Allegri's squad when it was circulated on the morning of the last-16, first-leg tie.

Pogba has endured a miserable start to his second spell with Juve after re-joining the club from Manchester United last July.

The 29-year-old midfielder has suffered with multiple injuries and had to wait until February 28 to make his second debut, coming off the bench in the 4-2 derby win against Torino and also appeared as a late substitute in Sunday's 1-0 defeat at Roma.

Thursday's game against Bundesliga club Freiburg had been earmarked as one in which he could make a long-awaited start with Allegri outlining his optimism at the pre-match press conference.

However, widespread reports in Italy have suggested Pogba was late to a team meeting 24 hours before the game with Allegri subsequently opting to leave the player out completely.