Doubt he would be registered for our CL squad this season. Even if he would be probably wouldnt get much playing time vs Barca. Probably not even on bench if other strikers are fit.
Also signing him now could be a risk as we get him for 30m this weekend, he gets injured in Africa Cup for 4 months ad first time he plays for us is maybe in May.
I think he is a good striker that could be useful but not a world class one and not a huge improvement on Dzeko or Jovetic if any. Younger, maybe bit stronger than Negredo. Not sure we need to spend around 30m to have 4 strikers again.
Swansea will hold out for as much as they can, no surprise in that, would do the same in their place. If they can keep the interested parties in it still until end of January to maybe get not 25m but 28 thats good for them, Bony is away anyway at the moment. and if he stays he cant be angry because a good performance in the last few months of the season can earn him other more great opportunities in the summer.