Bebe is currently on loan at Pacos de Ferreira and he has impressed during his stint at the club this season.
The 23-year-old has struggled to make an impact at United since his surprise move to Old Trafford in 2010 just five weeks after he joined Vitoria de Guimaraes and has made just seven appearances for the club.
Bebe has been farmed out on loan to Besiktas, Rio Ave and now Pacos de Ferreira during his time at United and will reportedly be offloaded permanently this summer.
Benfica are reported to be weighing up a move for Bebe after being impressed by his performances for Pacos, but the forward has played down speculation linking him with a switch to the Stadium of Light.
"The rumours about Benfica and other clubs do not affect me," Bebe told Portuguese television station TV Sport.
"I still have the desire to do my best for Pacos de Ferreira.
"At the end of the season I will talk to my agent and decide what is best for me."