As much as I like both Drogba and Eto'o I'm starting to have serious doubts about their transfers.
They won't be starters so:
First - they'll be unhappy because they won't play that much and they have every right to be unhappy because they are (were) top class, even world class strikers.
Second - considering their age, it is crucial for them to play more often if they want to be in good shape. But they won't play that much and their form will drop massive in the most important stage of the season.