Manchester United manager José Mourinho is believed to be deeply concerned over suggestions that Belgium will field their star striker Romelu Lukaku in this evening's World Cup 2018 qualification match against Cyprus.
Belgium are already qualified for next summers' tournament, and Lukaku is only just recovering from an ankle injury.
As reported by the Daily Mail, Mourinho is concerned that Lukaku could further aggravate the injury ahead of United's crucial Premier League match against Liverpool, a game which he will be desperate to have the former Everton man fully fit for.
However, Belgium boss Roberto Martínez played down Mourinho's concerns over fielding the striker against Cyprus.
"Romelu is fit and available, he's training with us tonight," Martinez said. "And, no, I have not received a call from Mourinho. The reason he wasn't in the squad in the previous game was because he wasn't 100 per cent."
"Now he is 100 per cent but we need to take into consideration that he has been with the group for only one session. He's been working on an individual basis, really good work, but we need to keep that in mind."
Lukaku has instantly found himself at home since at Old Trafford since joining the Red Devils for £75m in the summer, and has so far made a valiant attempt to justify his lofty transfer fee - having scored ten goals in nine appearances across all competitions for United so far this season.
Mourinho's men will be desperate to win against their fierce rivals Liverpool on Saturday, as United look to build upon their impressive start to the 2017/18 Premier League campaign - winning six out of seven of their opening matches.