I think there's a strange notion that, if he's not being chased by top teams (rumour has it, anyway) then he must not be good enough. This is in spite of flops like Alexis Sanchez and others that we beat off high profile competition for.
Let's look at realistic contenders. Madrid have lots of attacking midfielders, including two they'd probably be happy to sell (James and Isco). Barcelona prefer more of a possession midfielder. Atletico have Felix as a second striker and don't play a conventional AM.
Juve are stacked in midfield. Inter probably can't afford him and have decent young Italian midfielders in Sensi and Barella. Milan have Paqueta. Napoli have Fabian Ruiz.
Bayern have Coutinho on loan and he's doing OK. Dortmund have Reus and Brandt. The others can't really afford Bruno (Leipzig probably can but buy cheaper typically).
As for England, City have De Bruyne, the Silvas, Mahrez and Foden who can play AM. Chelsea had a transfer ban in the Summer but now have lots of CMs and Loftus-Cheek to come back. Arsenal are not as wealthy and still need to shift Ozil. Arguably, one could wonder why Liverpool aren't in for him but they're hardly lacking. The only other Prem team that could reasonably attract him are Spurs and they've been heavily linked.
So this notion that us having a relatively clear run at him means he's not good enough is just nonsense.