"He's had two consecutive injuries that have kept him out so far. He played longer than he perhaps should have played in the last game, but he did very well," Martino told reporters at a press conference.
"We're very happy to have him back in the group. We already know what he brings to the team. He has excellent individual technical ability and he's very unsettling for opponents."
Alba, 24, is not expected to be risked for the Champions League clash with Celtic on Wednesday.