Some of these former Sporting stars now play for the likes of Real Madrid, Manchester United, Southampton and Premier League champions Leicester City.
The Sporting Lisbon striker is also wanted by Leicester City.
The Belgian winger believes that Chelsea have a squad more than capable of winning the Champions League.
Paolo Sousa and Ole Gunnar Solskjaer led their respective teams, Videoton of Hungary and Molde of Norway to impressive wins in the Europa League. Could one be the next boss at Ewood Park?