Tottenham head coach Ange Postecoglou has admitted a late call will be made on the fitness of captain Son Heung-min ahead of Sunday’s trip to Manchester United.

Son started Thursday’s 3-0 home win over Qarabag in the Europa League, but needed treatment before he limped off in the 71st minute.

Postecoglou hopes Son’s hamstring issue is not serious and the South Korea forward wants to train on Saturday to prove his fitness.

“Fair to say the boys are fairly tired, the ones who put in a shift. Apart from Sonny, everybody is okay,” Postecoglou revealed.

“Sonny, I don’t think is too bad. He wants to train tomorrow and we will see how it goes and make a decision from there. We have another day up our sleeve to give him every chance.”

This week has seen Son’s future put into sharp focus after he discussed his contract situation on Wednesday and admitted no fresh talks had taken place.

Son’s current terms are set to expire next summer, but Tottenham hold the option to extend his deal by a further year and plan to activate that clause, the PA news agency understands.

Spurs boss Postecoglou also insisted he wants the 32-year-old to stick around, with Son into his 10th season at the club after he joined in 2015.

Postecoglou added: “I don’t always have the final say but certainly I like to think my input is significant on it.

“I think it is part of a broader discussion around Sonny but the way he is performing and leading the club at the moment, I certainly want him to stick around for a while.”

If Son is unable to recover in time for the clash at Old Trafford, Postecoglou has limited options to play on the left wing.

Timo Werner was used there against Coventry last week, but struggled, while 17-year-old attacker Mikey Moore could be handed a full debut.

Moore caught the eye in pre-season and Postecoglou would have no hesitation in starting him against United.

Asked if Moore was not yet ready to start, Postecoglou insisted: “No, I wouldn’t say that.

“We’ll see with Sonny. Obviously with Wilson (Odobert) out, we’re kind of limited and with Richy (Richarlison) out because Richy can play there as well.

“Timo and Mikey can certainly come into the frame. We have Deki Kulusevski who can play wide as well so we’ve got some options there, but firstly we’ll see how Sonny is.”