Zlatan Ibrahimovic jokingly told his agent he would "break his legs" if he allowed fellow client Paul Pogba to move anywhere other than Manchester United.
Mino Raiola, who represents both players, as well as Henrikh Mkhitaryan, oversaw the deals which took all three to United this summer.
"Zlatan told me, 'Do not transfer Pogba elsewhere or I will break your legs," Raiola told Volkskrant.nl.
Pogba has taken time to settle since returning to United but produced a much improved display against Leicester on Saturday, getting on the scoresheet in a 4-1 victory.
Prior to that game, Raiola made known his feelings that Jose Mourinho had not been playing Pogba in his favourite position - on the left-hand side of an attacking trio.
"Pogba still has to find his place in the team," said Raiola.
"My preferred position for him is left attacking midfielder. With his power, stamina and technique... Pogba would be unplayable in that role. But Mourinho takes the decisions."