The Red Devils are on the lookout for a number of signings this summer as they look to strengthen their squad ahead of Jose Mourinho’s third season in charge at the club.
Manchester United ended the campaign without a trophy this term as they finished in second place behind runaway champions Manchester City.
Mourinho will now be focused on trying to bring in the right players to bolster his squad this summer as he bids to build a team capable of winning the title next term.
Bale’s future has been a source of speculation in recent days after he hinted that he would be open to a move away from Real Madrid in the wake of the club’s Champions League final win over Liverpool FC.
And former Liverpool FC midfielder Redknapp believes that Bale could be the missing link for the Red Devils as they bid to try and end their wait for the Premier League title next season.
Writing in his column for the Daily Mail, Redknapp said: “If Manchester United want to stop playing boring football, Jose Mourinho should go out and sign him.
“Mourinho is not going to make a player like Bale track back and help out the left back. He will want to get the ball to him at the top of the team and win them matches.
“After the final whistle on Saturday night, Jose should have been straight on the phone to Ed Woodward.
“Buy Bale and the United fans would believe they can catch Manchester City next season.
“Bale would rightly have reservations about United’s style of play, of course — and about how another star in Paul Pogba has struggled.”
Manchester United have not won the Premier League since 2013.
MORE: Man United latest news
MORE: Arsenal latest news
MORE: Chelsea latest news
MORE: Liverpool latest news