Ousmane Dembele hasn't exactly set the world alight since signing for Barcelona.

Widely regarded as one of the most exciting young talents in the game, Dembele has struggled to adjust after his Borussia Dortmund exit and is far from guaranteed a place in the starting XI.

Despite Lionel Messi picking up an arm injury, Ernesto Valverde has looked towards different options in the squad with Rafinha and Malcom also battling for a starting role.

More worrying than Dembele's form, though, is reports in Spain about the forward's attitude and it seems he doesn't have the desired commitment at the club.

Rumours emerged last season suggesting he needed help settling in to his new surroundings and wasn't maintaining the diet expected of a professional footballer.

Dembele-Barcelona rumours

But that early season momentum has certainly fizzled out with Dembele failing to score since September and allegedly arriving late to the clash with Inter Milan.

Marry that to suggestions Valverde was still angry with his protracted warm-up against Sevilla and it seems all isn't well with Dembele at Barcelona.

Well, that's what the Spanish publications are suggesting.

Dembele's Instagram activity

It seems the speculation about Dembele has gotten to the point where even the player himself can't let it pass, and Barcelona fans spotted some rather interesting Instagram activity from him this week.

A Barcelona account posted about the rumour that Dembele had turned up late, only for him to comment a long line of laughing faces in the comments.

Check it out below:

In summary, Dembele is having absolutely none of the current reports.

Unless the 21-year-old is plotting some kind of elaborate cover-up, it's clear the reason for his time on the bench isn't because of his lack of punctuality.

And the inescapable fact is that Dembele hasn't really impressed for the Blaugrana recently and he faces plenty of competition to make the team, even with Messi on the sidelines.

When asked about Dembele's form in a recent press conference, Valverde noted: "Like all the other players, he needs to be ready when we want him.

"[Advice for Dembélé?] Simply, work hard every day in training and in matches. I think Dembele loses the ball as other players like Rakitic, Suarez and Coutinho.

"It’s true he’s not played much, but he has to be ready to play at any moment. It could be tomorrow, it could be in the future."

Rumours of a late arrival seem to false, but Dembele still has plenty of work to do at the Nou Camp.

Do you think Dembele is good enough for Barcelona? Have your say in the comments section below.