Agree, we need physicality for sure - our CBs have to be strong lads, which we have with baath ballard n alese but for me the key is mobility.
We want to press teams so we need CMs that can get about the pitch n win duels. They dont need nessarily need to be over 6ft for example - we could get a 6.4ft cm who can win headers but cant get about the pitch.
Neil n ekwah are perfect for the way we play as both cover a lot of ground but equally they are winning the majority of their duels. Both win over 55% of their duels - thats very good for CMs. Michut was below average in this area, he won around 40% of his duels n this dropped to 17% of aerially duels. Michut was slightly better at retaining possession though, about 3% higher than both neil n ekwah
I agree with everyone saying we need physicality but it cant just be sign big lumps. Its about signing players who are technically good, as you mentioned, but who can get around the pitch at good pace, and that can maintain this throughout