10. Mamadou Sakho
Sakho is known for his leadership credentials, his tireless engine, hard-working attitude, and his tackling ability. He currently plies his trade for Paris Saint Germain in France but is unhappy since the arrival of Thiago Silva has pushed him down the pecking order. He is primarily a centre back but can deputise at left back should there the situation call for it. At 22 he has at least another ten years at the top of the game ahead of him. He has represented France at every age group and has five caps for the national team. He has been on Wenger's radar for a few years know but in the past PSG were unwilling to part with him but now that they have "we can buy anyone we want " money Arsenal could get him for as little as £10 million. He would instantly upgrade the Arsenal defence and would form a formidable partnership with Laurent Koscielny especially if Vermaelen fails to rediscover his form or fitness. He is a tremendous upgrade over squad players Djourou and Squillaci and is easily more talented than Mertesacker, a man who moves slower than the polar ice caps melt. Marseille and Newcastle have been linked with him recently but if Arsenal were to enter the race they should have the inside track.