Gary Neville has urged the FA to tie down their "greatest asset" Gareth Southgate ahead of England's first appearance in a major tournament final in 55 years.

The Three Lions are out to win the European Championship for the first time in their history on Sunday when they face Italy at Wembley Stadium.

Win or lose, this run to the final is the latest mark of the progress made by international football's perennial underachievers, who also made it to the semi-finals of the 2018 World Cup under Southgate.

And Neville believes English football chiefs must do all they can to keep the man who has masterminded these recent successes in charge for as long as possible.

He told Sky Sports: "I said it four or five weeks ago that I thought that Gareth Southgate is our greatest asset and I'm still absolutely of that opinion. 

"There is nobody in this country that knows international football better than Gareth Southgate in terms of tournament football and that's got the ability to coach. 

"Many of us have been to many tournaments, but he's then been in the U21s.

"He's been in the system, he knows exactly what it's like to coach in the system of the FA, understands the politics and the way in which the FA works and accepts that and [doesn't] make it a problem, which many managers in the past have. 

"All those things that are difficult to contend with, the media, the handling of players, the club v country stuff - he's seen all that before in his playing career and U21s career and all those things that he's seen happen wrong before he's been able to put right through his experiences as England manager and that's why he is our greatest asset. 

"We should try and keep him for as long as we possibly can, that's not to say we'll win [against Italy], that's not to say we'll win in the next tournament or do well in the next two tournaments but I genuinely don't believe there is anyone who has got the experience, knowledge and capability to perform for England like he has."

A raucous atmosphere is sure to greet England as they step out onto the Wembley turf aiming to secure their first trophy since winning the 1966 World Cup at the same stadium.

But Neville expects the players to be better prepared for the emotion of the occasion after experiencing similar during their semi-final win over Denmark.

He continued: "It'd be interesting to know whether the pressure impacted the players in the first half an hour of the game against Denmark because the first 20 minutes after kick-off - it was absolutely mesmerising, spine-tingling to the point where it had an impact upon us [in the stadium].

"No England player would have seen that since Euro '96 so I can't believe that didn't have an impact on them in the first half an hour.

"They were in a special place on Wednesday but I think because of that they will be used to it and will be better prepared for what's going to happen [in the final].

"Germany was good but Wednesday was absolutely off the scale against Denmark. It was brilliant."

Gareth Southgate could spring a surprise by starting Jadon Sancho instead of Bukayo Saka for England in the Euro 2020 final against Italy.

That is the view of former England defender Gary Neville, who believes the spot on the right wing that was filled by Saka in the semi-final win over Denmark is the only position up for grabs.

Neville would have been tempted to play Marcus Rashford if the Manchester United forward had been in better form.

Instead he believes another soon-to-be United player Sancho, who started the quarter-final against Ukraine in Saka's absence, could be the man who gets the nod if 19-year-old is indeed left out.

Saka has had an impressive tournament for England and Neville acknowledges it could be an "unpopular" decision.

He feels it would be easier for Southgate to pick an unchanged side and then take Saka off in the second half as he did in the extra-time triumph in the last four.

The Arsenal youngster has been put forward for many press interviews prior to the Italy clash, but Neville thinks that could be a red herring.

"There is only one possible change and that's Saka," he said to ITV Sport.

"I know that would possibly be an unpopular thing to say.

"He may say [to Saka] go for 60 minutes and we'll get you off - which he's done before - he may say that and go with the same team. 

"But I just wonder whether he might bring someone else in.

"Actually putting him up for interviews before the final makes me think he might not be playing.

"If Rashford was in form I'd go Rashford-Sterling just to get in behind [Giorgio] Chiellini and [Leonardo] Bonucci but Rashford hasn't been in the greatest of form. 

"I would think it would be Sancho if Saka doesn't play.

"I think you have to play two of the quicker ones, so it would be Saka, Sancho or Rashford with Sterling on the other side."

Phil Foden missed training on Saturday with a knock and the Manchester City star is the only injury doubt for England.

While he called the development "a blow", Neville believes England can cope due to their strength in depth, particularly in the attacking positions.

He told Sky Sports: "It would be a blow for Phil Foden personally and for the team because he is an important part of those six or seven forward players that we have that float around Harry Kane.

"One of the great strengths in this tournament is that you can start Bukayo Saka and Raheem Sterling and bring on Jack Grealish or Jadon Sancho or Phil Foden and not really drop in quality that much.

"We have got an exceptional amount of talent in those positions.

"We are better in the latter half of games, the danger against Italy is that if we do start badly in that first half an hour then the Italians will punish us more than Denmark did.

"You don’t want to be behind to a team with the defensive record that they have.

"It's important that Foden is fit for him personally but if not then an injury is an injury, it's important that we have a lot of players who are fit in those positions going into the last 20 minutes of games which has become critical for us."