Milenkovic-savic is the best CDM available, but i doubt very much that pep wants a first team player already having Rodri, so we look for someone without the reputation willing to fight for the place that will not take too much money, that will probably needed else where, So Zakaria is tall, so is Rodri and that is the reason we have kept so many clean sheets this season, Zakaria is one of the fastest of the linked players, and with a slow team this could be an advantage, he is also one of the best at tackling and as you would expect interceptions, his passing is hot great, Rodri`s is better but it could improve with different questions being asked?, in short Zakaria has most of what we have and most of what we have not.
My first choice would have been Camavinga but i think Pep would rather wait for a youth player to come through