Ivan Rakitic signed for Barcelona in 2014 from Spanish side Sevilla.
Rakitic who joined Barcelona in 2014 from Sevilla is reportedly considering changing his environment if central midfield partner Andres Iniesta departs in the summer.
Jose Mourinho is reportedly willing to offload several Manchester United players in a bid to strengthen for their campaign next season and Rakitic is one of the players identified by the Portuguese coach.
According to a report by Spanish media outlet Don Balon, Rakitic is considering a change of environment in a bid to start off a new challenge after a disappointing Champions League exit to Roma.
Another factor which could determine if Rakitic moves, is that Manchester United are reportedly willing to offer higher wages than his current earnings.
Manchester United are reportedly looking for a midfielder to compliment Paul Pogba who has been criticized for being inconsistent, and Rakitic is seen as ideal by Mourinho.
The report added that Rakitic is not the only midfielder on the Manchester United shortlist, Bayern Munich enforcer Arturo Vidal and Nice midfielder Jean Michael Seri are also alternatives.
Rakitic has won two La Liga titles, three Copa del Rey, one Supercopa de España, UEFA Champions League, UEFA Super Cup and FIFA Club World Cup since his move to Barcelona.