this was far from a masterful performance by the juventus midfielder , but he was entitled to ease himself in to this champions league tie .
pirlo had , after all , been out for seven weeks with a calf injury before he was called upon to start this quarter-final tie .
his 57th-minute pass , which sailed over the heads of the players in both teams towards the target of alvaro morata , led to the controversial moment when czech referee pavel kralovec awarded a penalty .