Diego Simeone has cast doubt over his own future and that of Antoine Griezmann after failing to give assurances that he would stay at Atletico Madrid.

The Argentine coach had been expected to lead Atleti into their new stadium at La Peineta when the season begins in August, though Manchester United's interest in France international Griezmann has been a cloud lingering over the club.

And now Simeone has revealed that 'Grizou' offered to remain with the club if the coach would give similar assurances, only for Simeone to be non-committal.

"Griezmann said to me: 'if you stay, I'll stay,'" the Atleti coach revealed.

"But from here forward nobody knows what is going to happen.

"I would never force him to say."

Atletico are expected to secure the signing of in-demand Lyon forward Alexandre Lacazette this summer if successful in appealing their transfer ban.

But the France international would then be competing with fellow Bleus Kevin Gameiro and Griezmann for a spot in the side.

While Lacazette has been reportedly pursued at the behest of Griezmann, the club are aware that they would be powerless if Man United met his €100m release clause, something the Red Devils are willing and able to do.

Manchester United's potential summer transfers Show all 6 1 /6 Manchester United's potential summer transfers Manchester United's potential summer transfers <b>In:</b> Victor Lindelof United have been linked with signing the Benfica centre-back for some time now. Rumours have however surfaced that the Red Devils might be deterred at the fact that the Swede has signed a new contract which will increase his release clause to a reported £50m. Manchester United's potential summer transfers <b>In:</b> Virgil van Dijk The Southampton central defender was subject to a lot of interest from the league’s big clubs approaching the January transfer window. Many clubs will likely return for him when the window reopens. Manchester United's potential summer transfers <b>In:</b> Antoine Griezmann One of the world’s most sought-after talents, United would have to pay big money to bring him to Old Trafford. With Zlatan Ibrahimovic coming to the end of his career, Griezmann could be seen as a long-term choice to spearhead United’s attack. Atletico’s main man won Player of the Tournament at Euro 2016, after scoring six goals. Manchester United's potential summer transfers <b>In:</b> James Rodriguez The Colombian international has spent most of this season on the sidelines, with most of his appearances coming from off the bench. Despite this, it would still require a high fee for Real Madrid to let him go after they signed him from Monaco for £63m. Manchester United's potential summer transfers <b>In:</b> Yannick Ferreira-Carrasco This campaign, United have failed to have a consistent performer in the left-wing role with Memphis Depay and Jesse Lingard flattering to deceive for the most part. Carrasco would be a perfect fit, slotting in alongside Ibrahimovic and Henrikh Mkhitaryan in their front three. They’d have to break the bank to prise the 23-year-old away from the Vicente Calderon, though. Manchester United's potential summer transfers <b>In:</b> Nelson Semedo United have been heavily linked with Semedo’s teammate Lindelof, but reports suggest that Mourinho is interested in the right-back also.

The fear in the United camp is, however, that Griezmann is still trying to negotiate a move to Atletico's cross-city rivals Real Madrid.

Simeone has suggested that he may not be with Atletico next season (Getty)