Ajax captain Jan Vertonghen has vowed to give his all for the Amsterdammers despite continued speculation linking him with a move to Tottenham Hotspur.

The Belgium defender reported for pre-season training with his team-mates yesterday but it remains unlikely he will be on board when Ajax open the defence of their Eredivisie crown against AZ Alkmaar on 8 August.

Vertonghen told the club's official website: "Of course it goes through my head that there is still no clarity about my future. It is difficult and I can't say I don't think about it, but that's how it is and I have to adapt.

"For now I play for Ajax and I will always give 100 per cent for them. I am a professional athlete and despite all the issues for me it is simply the beginning of a new season. And that, for me, starts at Ajax."

Vertonghen is hoping the situation is resolved as soon as possible.

He added: "It is obviously impossible to say how long these things take but well before 31 August (the closing of the transfer window) there must be clarity. Until then I will just focus on Ajax."