The full-back is on a season-long loan at the French club and has impressed during his time with the Ligue 1 leaders. Marseille are keen to keep Mears on a permanent basis and the former West Ham player is enjoying his stint in France.
However, the 26-year-old has revealed that family ties mean he would be reluctant to extend his spell in the south of France and is hoping to secure a move to a club of a similar level in England.
"It's a difficult scenario for me because Marseille is a platform I want to be playing on - in the Champions League, Europe, definitely in the UEFA Cup, and fighting to win titles," Mears told Sky Sports News.
"The problem for me is that my family is based in England, so they can't move out with me. I've spent a season away from my two children and it's been really hard on them as well as on me.
"Obviously, Marseille have opened talks with me, but it's going to be difficult for me to commit to three or four years outside of England."