Thomas moved into the 13-man game with the Wrexham-based Crusaders in March and will be keen to help Wales beat the French today.
However, he could be following in the footsteps of big mate Andy Powell, who is at London Wasps.
Asked about reports linking them with Alfie, London Welsh chief executive John Taylor said: “We do not have the budget or the need in our current squad for another wing or full-back.
London Scottish chief executive Tony Copsey, the former Wales lock, said: “We would like to have him but he is thinking over his options.”
Scotland V England Hospitality
Wales will take their place among rugby league’s elite if they can overcome France in Albi to win the Alitalia European Cup this afternoon.
The winner will qualify for the 2011 Four Nations tournament and take on England, Australia and New Zealand.
But Wales’ bid has been hit by the absence of skipper Lee Briers, who has a knee injury.
Coach Iestyn Harris said: “Gareth Thomas is going to be captain. Lee has had a knee injury all week, which we’d hoped he’d recover from.
“I don’t think Gareth’s leadership qualities have ever been in question.
“His leadership qualities for the group will be key for us and he’s excited by the challenge and he’s looking forward to it.”
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England V Scotland Hospitality