Roy Keane has named the two players Manchester United must target to mount a title challenge, saying the club should spend "whatever it takes" to sign them.
Ole Gunnar Solskjaer's side have surprised many with their position as the second-best side in the country this season, but they are still 13 points behind a Manchester City side who are closing in on the title.
"I still feel they are two or three players away from challenging Man City," United legend Keane told Sky Sports. "They're short. They still need a world-class striker, they need another midfielder and also possibly a centre-half. But I'd prioritise a striker and a midfielder.
"The two players who I've thought about over the last few weeks who I feel would be brilliant for Man United are Harry Kane up front - whatever it costs - and I'd go with Jack Grealish.
"I feel United are still short of that special player. I think Grealish would give them that and I feel he would enjoy playing at Old Trafford."
"The fans would love him. What I admire about Jack is he's got great courage on the football pitch. He always wants the ball in tight areas. We've seen over the last year or two his end product has improved. He's an excellent player and obviously Kane would guarantee goals."
Kane isn't just scoring goals for Tottenham this season, the 27-year-old is also leading the Premier League assist charts with 13. However there's talk the England captain is ready to leave Spurs this summer (although the club would reportedly rather sell Kane abroad than to a Premier League rival).
Aston Villa star Grealish is currently sidelined with a shin injury, but the 25-year-old shone in the early part of the season as his side pulled off a series of impressive results.
Keane admits that pulling off the transfer of both players wouldn't be easy, but reckons United should have the sway - and the finances - to do it.
"Would it be difficult to get these two players? You bet your life it would be," said Keane. "But Man United have to go out and try to sign the best otherwise we'll be having the same conversations next year about being nearly there.
"Jack would be ready for Man United. He's done well for Aston Villa, a brilliant club who are doing very well, but Jack's got to be selfish."
He added that the defence also needed work, admitting: "I still think they need a centre-half but their priority would be to get two attacking players and they're going to have to spend around £200 million to get the two players I've mentioned.
"They do need another centre-half, with a bit more pace. That's the problem for United as they will want to be able to push higher up the pitch. They're constantly worried in the big games using two sitting midfielders and that's because they're worried about the two centre-halves - more with their pace than anything else.
"They're good solid defenders, particularly [Harry] Maguire, but when you talk about the really big games, it's a problem for Manchester United. They will have to get somebody."
Keane also spoke out in support of the Manchester United fans who protested against the club's ownership on Sunday.
All imagery: PA Images/Sky Sports
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