Personally would be happy to extend Walker for another 2 years. Like signing a top quality player for £13m on a 3 year contract.
Different decision if we are not going to play him and we just stick with the 4 CB approach but agree he actually played a lot even after Pep questioned his suitability for a changing system and Pep and club are awfully keen on keeping him so assume those comments were largely a kick up the backside for the off field error.
I'll be honest and say I don't think there is a great alternative on the market at the moment and I like the comfort factor of having Walker as an option we turn to when up against pacey forwards even if his game time reduced.