Manchester United midfielder Marouane Fellaini has reportedly agreed terms on a switch to Besiktas at the end of the current campaign.

The 30-year-old is out of contract at Old Trafford this summer and has thus far refused to sign a proposed new deal with the club as he considers alternative options.

According to Turkish publication Foto Mac, the Belgian has now made his mind up and has decided to join Turkish Super Lig outfit Besiktas when his United contract expires.

United manager Jose Mourinho recently described Fellaini as a "very important" part of his squad, admitting that he was trying to persuade the player to stay.

Fellaini - currently on the sidelines with a knee injury - has made just 16 appearances for United across all competitions this season.