Because Jermain Defoe is out for up to three weeks due to ankle ligament damage, and Emmanuel Adebayor will only return to training tomorrow, Bale may start up front in Saturday's home game against Newcastle.
"There is a possibility that we continue with the 4-4-2 with Gareth as a striker," said Villas-Boas, who started Bale just behind Defoe at West Brom last weekend.
"He's having a tremendous year. I think he's such an outstanding player all round. His performance yesterday was outstanding once again. He's certainly amongst the five best players (in the league)."