"If he is not going to play next season then he should be allowed to continue to flourish at Burnley".
The Englishman has played 39 games for the Clarets and has 2 goals and an assist to his name. He also got the opportunity make his global debut for England against Germany in March.
Apart from Keane, United are also targeting Southampton centre-back Virgil van Dijk in the next transfer window.
Jose Mourinho had openly criticised his defenders Phil Jones and Chris Smalling and their disappointing performances this season and don't be surprised if they sign a centre-back this summer.
If the transfer did go through, it would be the second summer in succession that United would have bought back one of their former academy players following Paul Pogba's world-record £89m return in 2016.
Keane, who has continued to live in Manchester and is a boyhood United fan, can expect to quadruple his £25,000-a-week wages if he returns to a club that he first joined at the age of 11.
'I just hope that United are signing him for the right reasons.
Dyche has already admitted that Burnley would be open to the idea of sanctioning Keane's sale "if all parties agree". "You want your players to be successful, which is good for them, good for the team, good for the club. On the other hand, that does bring interest".
United are also expected to offer Keane a contract worth four times the £25k-per-week he is now earning at Turf Moor every week.
The England global joined United when he was 11 years old but couldn't make It to the first team.