Roy Keane told Man United to sign two players and snub one - they didn't listen and he was right

Saturday's FA Cup final at Wembley will mark the end of several Manchester United players' careers at Old Trafford, with a summer of change and transformation brewing.

United co-owner Sir Jim Ratcliffe is planning to roll up his sleeves and make long overdue changes to the landscape of the squad. As reported by the Manchester Evening News in February, it is understood that player sales could reach double figures.

All but four players within the squad are available to leave the club if anyone comes knocking with an attractive offer, highlighting the size of the rebuild that could take place. United have identified three positions they want to strengthen as a minimum, but further additions beyond filling those particular blocks cannot be discounted.

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Among the areas of the team that United have identified to add fresh blood to are central-midfield and attack. United are crying out for a replacement for Casemiro, who can slot straight into the team and produce some much-needed aggression and control in the engine room.

Manager Erik ten Hag has overseen the additions of a handful of midfielders since taking charge of United two years ago, including Mason Mount. The midfielder joined United from Chelsea last summer for a fee that could eventually be worth £60million.

Mount's debut season at Old Trafford has been plagued by injuries, restricting him to just 19 appearances in all competitions. He has started just one Premier League fixture since October 7.

Over a month before United wrapped up a deal for the midfielder, former Reds skipper Roy Keane expressed concerns that Mount was not the addition United needed, citing his dip in form as one of the main reasons.

"I wouldn't be so sure about Mount," Keane feared, speaking to Sky Sports in May last year. "They're going to be linked with lots of players but the one that would excite you is [Harry] Kane.

"[Mount] has just gone off the boil a little but I know he bounced back and he's got quality. I was raving about him a few years ago but he's just gone missing the last year - a few injuries, the fact he can't get in a bad Chelsea team.

"I wouldn't be hanging my hat too much on him in terms of improving United and closing the gap. He's a good player but would he improve Man United? I'm not so sure."

Nobody could have predicted the injury complications that Mount has encountered this season. He has been desperately unlucky and United will be desperate to see a better version of him next term.

However, when you take into account the sharp rise of Kobbie Mainoo and the fact United plan to sign another midfielder this summer, it is hard to envision Mount being a regular starter. It is understood United will target a long-term replacement for Casemiro in the defensive-midfield berth.

Declan Rice, who was a long-term target of United's, would have been the ideal candidate to fill that particular void - and Keane namechecked him last year. The Sky Sports pundit also said United should have gone "all out" to sign Harry Kane.

"I think Rice would be a decent signing, but in terms of the excitement and the goalscoring, you'd go all out for Kane," he said. "But can you see Spurs selling him to Man United? Very, very difficult."

Tottenham Hotspur, of course, did not entertain the idea of selling Kane to a Premier League counterpart, granting him a move to Bayern Munich instead. United were forced to look elsewhere for a striker and signed Rasmus Hojlund from Atalanta.

Despite scoring a respectable 16 goals this season, United are planning to draft in another striker this summer to provide some healthy competition for the Dane. They are, however, unlikely to bring someone in the same category as Kane.

Kane has excelled in his maiden season at Bayern, scoring 44 goals in just 45 appearances. He also reached double figures for assists, creating 12 goals.