Reports in Spain claim Jose Mourinho is a big fan of the Croatia international and wants to bring him to Old Trafford this summer.
Rakitic is seen as a key player for Barcelona though and Ernesto Valverde will not let him leave the Nou Camp if he can help it. Spanish outlet Diario Gol, known for their outlandish transfer claims, say Rakitic will decide his future after the World Cup.
The midfielder is currently in Russia playing for Croatia as his country look set to progress to the knockout rounds. Rakitic was key in helping Barcelona dominate La Liga last season, making 35 appearances in total.
The reports claim Mourinho is keen on the midfielder following disappointing displays from Paul Pogba last season. The France star was inconsistent throughout and was even dropped in the second half of the campaign for a string of matches by the Special One.
Manchester United have already added Brazilian midfielder Fred to their ranks this summer.