While Nuno Espirito Santo remains uncertain how Ruben Amorim will set Manchester United up on Saturday, he expects Nottingham Forest to face a tough test at Old Trafford.
Forest were beaten 3-0 by Premier League champions Manchester City on Wednesday, their third defeat in their last four games.
However, they remain within touching distance of the top five ahead of a second successive away game in Manchester, where they will face Ruben Amorim's United.
United suffered their first defeat under the former Sporting CP coach on Wednesday, going down 2-0 to Arsenal at the Emirates Stadium.
With Amorim still getting to grips with his new squad, Nuno does not know what tactical challenges to expect but is certain United will present a major challenge.
The former Wolves boss said: "Their results are difficult to predict because Ruben in this moment is changing a lot.
"I think he is trying to get to know players better. The idea is there, we don't know exactly who is going to play, but for sure they have quality players.
"They are quality and have talented players. The shape is there. The personnel and the players... we cannot identify who is going to start, but our approach is always the same.
"Let's focus on the things they have been doing but also let's look at getting the advantage. It is always a tough place to go but let's focus on being positive on the game."
United conceded two goals from corners in their midweek defeat to the Gunners, prompting defender Matthijs de Ligt to demand improvements.
"In the end, we are Manchester United," De Ligt told MUTV. "We lost again and, yeah, it's easy, it's not good enough.
"So, we know that, we will work hard. We have to improve, and in two days or three days is the next game, so that will be a really important one again for us, to show again what we learned from this game and get the three points."
PLAYERS TO WATCH
Manchester United – Bruno Fernandes
Fernandes has been involved in 11 goals in his last 10 appearances at Old Trafford (four goals, seven assists), having a hand in six goals in his last four in the Premier League (two goals, four assists).
He's never scored or assisted in five in a row in the league at Old Trafford, while Marcus Rashford was the last United player to do so overall (seven in 2022-23).
Nottingham Forest – Chris Wood
Wood has scored 12 goals in his last 14 away Premier League starts for Nottingham Forest, netting in three in a row before Wednesday's defeat at the Etihad.
He missed a glorious chance while Forest were a goal down last time out and will be determined to atone here.
MATCH PREDICTION – MANCHESTER UNITED WIN
Man United have won six of their seven Premier League home games against Forest, with the exception being a 2-1 loss in December 1994.
They have also scored in all 14 of their Premier League games against Forest, their joint-best 100% scoring record against an opponent in the competition along with Swansea City.
The Red Devils have won 3-0 against Leicester City and 4-0 against Everton in their last two Premier League home games.
They have not scored three or more goals in three consecutive home league games since February 2021, while they last did so while winning each time in December 2018.
With United also beating Bodo/Glimt in the Europa League, Amorim has won both of his home games in charge of the side so far – only five managers have won their first three at home with the Red Devils, most recently Ole Gunnar Solskjaer in 2018-19.
OPTA WIN PROBABILITY
Manchester United – 55.9%
Nottingham Forest – 21.4%
Draw – 22.7%