Height is mostly irrelevant for a midfielder.
Xavi, Scholes, Makelele were all manlets.
I hope you do realize that mentioning a couple of great retired
midget midfielders does NOT make your statement in any case relevant lol
I can do that aswell you know? Just to name a few other great retired midfielders...
Patrick Vieira - 1.93m
Frank Rijkaard - 1.90m
Steffan Effenberg - 1.88m
Fernando Redondo - 1.86m
J.S. Veron - 1.85m
etc etc etc...
There is a thing called balance, our current tactics/characteristics demand another physical aswell as technically reliable midfielder that stands at minimum +1.84m tall to be able to efficiently compliment Pjanic&Matuidi in 4-3-3.
Basically, what we really need atm is an younger and better version of current Khedira.