Ruben Amorim's handling of a Manchester United star blew any chances the Red Devils had of signing Viktor Gyokeres, according to reports.
Gyokeres, 27, has been linked with a move from Sporting Lisbon for much of the transfer window with Arsenal currently in pole position for his signature.
According to Portuguese outlet Record, Gyokeres was upset with the manner in which Amorim jettisoned his Swedish compatriot Victor Lindelof.
The two players share the same agent in Turkish businessman Hasan Cetinkaya, with Lindelof said to have maintained a desire to remain at Old Trafford had he been offered a new deal by the club.