Romelu Lukaku has refused to return to Manchester United training until his future is resolved, according to reports.

Lukaku was granted permission to train with former club Anderlecht on Monday, which was a scheduled day off for the striker, but he was expected to return to Carrington on Tuesday.

United are refusing to comment on the reports, but the Belgium striker is desperate to force through a move away from Old Trafford, and Sky Sports claim United have rejected a new bid from Inter Milan worth £68m including add-ons.

Lukaku's move from United to Juventus is dead in the water after Paulo Dybala pulled the plug on the proposed swap deal owing to his wage demands not being met.

Dybala demanded £350,000-a-week wages from United over a five-year contract, which would have made him the club's second-highest earner behind Alexis Sanchez, but United were not willing to meet such extravagant demands.

The breakdown in negotiations has left the door ajar for Inter Milan to renew their interest in Lukaku, with head coach Antonio Conte frustrated that his new club are so far not willing to increase their initial £54m offer for the Belgian.

In the meantime, Lukaku received permission from United to use an official day off from training at Carrington to work on his fitness with former club Anderlecht.

The 26-year-old has missed United's perfect winning run during pre-season owing to a foot injury, but Ole Gunnar Solskjaer has been open to the idea of selling the striker this summer.

Romelu Lukaku had permission to train with Anderlecht, while Man United had a day off. He trained with the kids.

Lukaku began his career at the Belgian giants, where he scored 33 league goals in 73 appearances as a teenager - and the striker was clearly delighted to be given the opportunity to train with the club's youth team.

As the Belgian journalist Kristof Terreur wrote on Twitter: "One of those unexpected twists and turns" - but will he seal a move away from United before Thursday's transfer deadline?

READ: Joy Transfer Countdown, three-hour special airs Thursday