Jose Mourinho returns to where it all started tonight, as his struggling Chelsea side take on former club FC Porto. The Blues have looked imperfect in areas they seemed imperial last term, but Jose's time at the Portuguese giants should teach you one thing - never write him off.He famously won the continent's most coveted prize with the side, a feat he hasn't been able to achieve across two spells in West London - despite many more millions spent.Jose's clearly got the blues. The previously untouchable Nemanja Matic has sensationally been dropped for tonight's game, with John Obi Mikel coming in. That's right - John. Obi. Mikel.The man touted as a better player than Cristiano Ronaldo also finds himself dropped. Eden Hazard's dip in form has seen him replaced in the side by Ramirez.For the second consecutive game, club icon John Terry can't buy a place in the side. The former England captain sat out the draw with Newcastle on Saturday - and retains his status as a substitute tonight.On the opposite side, Iker Casillas comes up against the man who dropped him at Real Madrid. The two aren't the best of friends, to say the least - and it's unlikely to be a friendly reunion.The player so good they named him twice - Andre Andre - will feature this evening, after netting the winner over Benfica this weekend. Ruben Neves, a talented young star linked with a move to the Blues, will no doubt be looking to put himself in the shop window.