By Sean Walsh For a short but sweet while, Atalanta were the heartthrobs of European football. Their first Champions League adventure in 2019/20 saw them play their home games down the road in Milan at San Siro – and they were the only team occupying that famous old stadium to reach the knockout stages that year. Atalanta were minutes away from qualifying for the semi-finals that season before conceding twice late on to PSG, ending one of the European Cup’s great fairytales of recent years. The grandmaster behind that side, Gian Piero Gasperino, is still in the Atalanta dugout and will be look…