Haha I try to keep in mind that he is still recovering from a significant injury that kept him out for a number of months, and being so young he can always mature physically as he kinda looks to be carrying a little bit of baby weight still, but I am not joking when I say that sometimes he looks like he is running in sand while carrying current day Wayne Rooney on his back.
I remember one instance in the first half today, against league 1 opposition, that someone was dribbling right down the heart of our midfield towards our goal, and I kept waiting for Mainoo to sprint and to try to catch up to the guy, and..... he just didn't. He stayed the same pace, and he got nowhere near the player.
I think it is acceptable to have a CM that "lacks a bit of pace" if they can compensate in other areas. But this looks like way more of an issue, as it is right now, than simply lacking a bit of pace. And yes, even thought he is a CM, I think it is an issue that quality players will exploit. Look at the liverpool game recently, where Ryan G. saw that he could dribble past Mainoo and started doing it at will. Thats a problem. If he can't track runners properly because he can't keep up with them? Thats a problem.
And I get slightly annoyed at the retorts bringing up Scholes and Carrick. Is it possible that their lack of pace was adequately covered by being surrounded by world class players at every position? Carrick had Darren Fletcher to cover every blade of grass, and Mainoo has Scott McT. Scholes had freakin Roy Keane or Nicky Butt as possible midfield partners, and Mainoo has Scott McT or Bruno. Is it possible that Scholes and Carrick's lack of pace might have been more noticeable and more of a problem if they were on a midtable team, surrounded by midtable players, as Mainoo currently is?