Thirty of UEFA 's 54 member associations currently use AARs to varying degrees .
Platini is satisfied that -- after convincing initially sceptical chief refereeing officer Pierluigi Collina of their merits -- it is time for extra officials to be more widely used .
Thirty of UEFA 's 54 member associations currently use AARs to varying degrees , and Platini is satisfied that -- after convincing initially sceptical chief refereeing officer Pierluigi Collina of their merits -- it is time for extra officials to be more widely used .