I love how people are saying that this guy can't improve our defense when our CB's last year included Bartra and Adriano on a fairly regular basis. Bartra might be Barca class in a few years, but come on now. Sahko gives us height, tenacity, and no-nonsense defense. That is what the Barca execs want because that is what Puyi brought to the pairing. Pique comes forward, gambles, and sometimes get caught out. Puyi was the muscle and the enforcer, and that is what Sakho brings. For 15 mil, its a steal. Sure, he had a crap season. But so did Pique, and people still seem to love him.
Give me a real CB over someone inexperienced and unproven like Bartra, or someone just genuinely out of position like Adriano. We can't expect to win the UCL with the same kind of backline mentality we had last year. A stop gap is so much better than just a gap.