Zlatan Ibrahimovich will be a nightmare for José Mourinho and his players to work with if he is not granted training ground status as Manchester United's top man.
Former Swedish international and Leicester defender Pontus Kamark reckons that Wayne Rooney and everyone else at Old Trafford will have to defer to Ibrahimovic or there will be fireworks.
"He has been in all kinds of arguments, If someone comes in his way, he fights them.
He can kick you down in training. He does whatever it takes to be on the throne.
"That can be for good and for bad - especially if someone doesn't accept that," said Kamark.
"He always finds something because he can never be second best - Zlatan has to be No. 1."
Ibrahimovich has already claimed that Rooney will be his perfect strike partner but Kamark, a Swedish TV pundit, is reserving judgement.
"Hopefully they get along, him and Rooney. If they do I think it is going to be the perfect match.
"If they don't, he is going to create a lot of problems."