Get rid of Skrtel or Munoz?

[CalumE5]

I've just bought Otamendi in the 3rd season, and I need to sell a DC so there's not as much competition. I'm keeping Agger and Shawcross and Wilson, but I'm trying to decide whether I'd be better off selling Munoz or Skrtel. I'm in no desperate need of money, so don't let that influence your suggestion

Thanks!

 

[Pugman]

Sell Skrtel mate, try and get abotu 7mil for him.

 

[Stann]

Ezequiel Munoz is great out of them I'd get rid of Agger.