Radamel Falcao 's former Monaco team-mate Nabil Dirar believes the Colombian must be regretting his failed loan move to Manchester United even though he was not happy in France . The former Atletico Madrid striker moved to Old Trafford on a season-long loan last summer but has struggled to hit the heights he achieved before suffering a serious knee injury . United will have to pay £46million to make Falcao 's transfer permanent but having only scored four goals all season Louis van Gaal 's side are unlikely to take up that option . Radamel Falcao has struggled for Manchester United during his season-long loan . Falcao has struggled to reach the heights he achieved before suffering a serious knee injury . And Dirar has revealed that Falcao was not happy in France but thinks he would have been better off staying at Monaco . ' I think Falcao must be biting his fingers [ ruing the fact ] he 's gone , ' he told Le Parisien . 'Here , he would have played and participated in the Champions League . But he may need more atmosphere . 'In Monaco , he was not feeling well . '
Radamel Falcao joined Manchester United on on loan last summer . Striker has only managed four goals in a disappointing season . Nabil Dirar said he would have been better off saying at Manchester United news . READ : Gareth Bale wo n't be sold to Man United , insists Zinedine Zidane . CLICK HERE for all the latest Monaco .