I know many of you are Marko Marin fans, so I have good news: He'll probably play a lot more this season than he did last year. Unfortunately, that news comes with a corollary: It won't be at Chelsea. The German, signed from Werder Bremen last May, has been sent on a season-long loan deal to Sevilla, assuming he passed his medical (which, it being Marin, isn't the formality it sounds like).
Marin's Chelsea career was hobbled before he even played for the club, mostly thanks to a certain penalty kick from Didier Drogba, which ensured that Chelsea would be playing Champions League football and able to buy both Eden Hazard and Oscar. Injuries didn't help, and he quickly fell out of favour despite an impressive preseason, losing the 'utility winger' spot to Victor Moses and being further pushed down the ladder by the return of Yossi Benayoun. So it goes.
Marin has some talent, and a place like La Liga will be good for him. It's slower and less physical, which means his lack of any defensive value will be less exposed and his dribbling and passing will be allowed to shine. Good luck over there, Marko. We'll be keeping a close eye on you.