Manchester United legend Gary Neville says the importance of Jose Mourinho's side winning the FA Cup cannot be "underestimated".

The Red Devils could walk away from this season trophy-less if they fail to beat Chelsea in the final on May 19.

And Neville believes their momentum for next season will be severely dented if they can't win England's premier knockout competition.

Neville wrote in his Sky Sports column: "For United, is it a great season? No. But it is a good season because the momentum is still going as they have the opportunity to win the FA Cup and finish second, which would be progression.

"The importance of getting another medal round the necks of the players should not be underestimated in terms of keeping building and challenging Manchester City next season."