Three Galway players are in a race against time to be fit for Sunday's All-Ireland hurling quarter-final against Tipperary at Croke Park.

Centre half-back Derek Hardiman and wing back David Collins are both suffering from thigh strains, while midfielder Tony Óg Regan has a stomach bug.

Galway coach Conor Hayes and his selectors are hoping the trio will be ready as Galway return for their first championship game in Croke Park in three years.

The Galway squad trained in Croke Park on Sunday evening and will train this evening in Ballinasloe, where the fitness of the trio will be assessed.

Galway are not expected to announce their side until after training on Thursday evening.

Kevin Broderick has returned to light training and could be fit for an All-Ireland semi-final date if Galway are successful on Sunday.

However, Eugene Cloonan will not be in the squad for Sunday's encounter.

Galway, who won their three group games against Laois, Antrim and Limerick, have since played challenge games against Limerick and the Galway under-21s.

"We are hopeful the three injured players will be available," said selector Gerry Dempsey. "It is a case of wait and see. We had a good work-out in Croke Park on Sunday evening.

"While the Galway senior side have not been there for three seasons, a lot of our players have played there since then with the minors. We are all looking forward to Sunday.

"It would be great for Galway hurling to go another step," added Dempsey.

Galway footballer Michael Donnellan, meanwhile, has had to go to London for treatment and is a doubtful starter for the All-Ireland quarter-finals.

The former footballer of the year has been troubled by a long-standing tendon injury in his stomach/groin area.

The Galway attacker, who only returned to the squad at the start of the championship, is back in light training and Peter Ford and his selectors will be keeping their fingers crossed he makes a full recovery.

Donnellan travelled to London at the end of last week and he is not expected to resume full training until next week at the earliest.

Donnellan, who moved from his native club Dunmore MacHales to Salthill/Knocknacarra earlier this year, has played a major role in Galway recapturing the Connacht title.

He scored a goal in Salthill's club championship win over St Brendan's last Sunday week but was subsequently troubled by the old injury.