Reading the OP of this thread, it's my firm belief he should stay in Serbia for 3-4 more years. The problem with kids moving too early from Europe is they get lost in the system here. If they wait till they're about 22-24 then they have a more significant chance of making the first team squads of the teams that sign them. This way their original clubs make more profit, and allow their individual leagues to grow. This is looking out in the best interest of the game, not just Chelsea, Markovic & Partizan.