Reina fears that a drawn out sale process started by American co-owners George Gillett and Tom Hicks last month could lead to the departures of key players following a season which has ended without Champions League qualification.
"It is important players like Fernando (Torres) see the club moving forward," he told the Daily Express.
"Let's see how it goes with the owners and the sale of the club. Once we are done with that, let's build a proper team, a proper squad, a competitive squad."