For what its worth don't know why anyone would give you stick for that, seems very believable since we tried to offload Mangala on loan last summer (what a colossal mistake that would have been). Hardly a surprise Kolarov would want to stay under Pep, Angelino is definitely the type Pep would give a chance but I don't think he's ready personally (for big games at least as he isn't any more defensive minded than Kola, probably less so). Zabba I really hope stays, I know we could replace him for someone better (younger) atm and Sagna is more likely of the two to stay based on performances and contract situation but Zabba deserves that extra display of loyalty from the club (it just depends on his expectations of playing time). Stones I don't reckon is good enough and would result in us carrying on with the CB merry go round we've been on for the last few years.
Gundogan is a big risk and it would be a surprise if he didn't have a City career similar to Jovetic if he joined us.
Laporte seems to be the best CB choice we could make, and a sound one at that to sort us long-term.
On the point made about Zabba, we do need new full backs on both sides but we could keep Zabba in the squad and utilise him when suitable, maybe even in defensive mid like Demichelis' role this year.