Dan Martin has revealed he is a doubt to compete in this weekend's Clásica San Sebastián as he is suffering from a virus which he picked up in the last week of the Tour de France.

The Irishman, who finished 33rd in Le Tour, struggled through the final week of the event with a virus, and told VeloNation today that the virus is likely to keep him out of action this weekend.

Martin, who won a stage on this year's Tour, did, however, indicate to the cycling publication that he would be back to full fitness soon and therefore be able to race in some of the upcoming one-day races.

“I might make an appearance at a couple of the post-Tour crits. It hasn’t been negotiated yet, but I’d like to do some, just for the fun factor,” he said.

“I did one after Liege and it was a great atmosphere and really good fun. So it would be nice to be able to race - in inverted commas - in a relaxed atmosphere. But we will see.”

He also indicated that he would be keen to race in this year's Vuelta a Espana and that the Grand Tour was his next major target.

He said: “The plan was to do the Vuelta if I wasn’t finishing completely destroyed at the Tour. I’m not destroyed – okay, I was sick, but that has probably even helped me for the Vuelta as I haven’t been able to go as deep as I would have done. So I am definitely going to be racing there.

“I have ambitions there...with this team, we never go to any race without ambitions.

"I will be treating it the same way as I did this race [the Tour de France], chasing stages.

"We will be going there with a strong team. There’s something like eleven mountain-top finishes, so there are plenty of opportunities. And with the worlds on a tough course, that’s a major target too.”