The two summer signings are now officially part of the team and could debut Wednesday versus Espanyol in the Copa del Rey.
The European champions spent a combined £37m to bring Turan and Vidal in from Atletico Madrid and Sevilla respectively last summer, but have so far been unable to field them due to a FIFA transfer ban.
"Right now I'm not thinking about the [Espanyol game] because to be honest I don't know when I'm going to play, when I'll get my first minutes," Vidal told Barcelona TV.
"The coach knows that we've spent the last six months training, working hard, to contribute to the team and be in peak condition for whenever we're needed. Now we're in his hands."
With all of that out of the way now, Turan and Vidal can finally focus on playing football. And they could see their first minutes of the season at Camp Nou on Wednesday night when FC Barcelona face Espanyol in the first leg of the Copa del Rey last 16. Kick-off is set for 8.30pm CET.