Well I wouldn't say Lukaku was a good decision, leaving just 2 strikers and the way Torres is playing we really needed backup, especially when Ba cannot play in certain cup games. As for Courtois, he's been such a hit in Spain I don't think he really wants to come back to Chelsea, whereas if he wasn't loaned out for that long we could have played him instead of Cech, as lets face it he's younger and a BIG prospect