Sigurdsson was Villas-Boasâs first signing following his appointment in the summer but the Iceland international has struggled to replicate the form that saw him score seven goals in 18 Premier League appearances at Swansea last year.
At Craven Cottage he came off the bench when Gareth Bale pulled up with a second-half hamstring injury and then unselfishly laid on Jermain Defoeâs first goal.
âThat was excellent for Gylfi,â said Villas-Boas. âIt has been a hard time for him because at the beginning of the season he was involved a little bit more. But, like Lennon, he is another excellent professional.
âHe is working hard to try to get back to a level we recognised last year with Swansea. Against Fulham, we saw him at this level.â