I think it would be a mistake to sell him this mercato. We're going to bring in at least one more CM, a forward, maybe a RW, maybe a RB, then TWO LBs?? During a pandemic and global economic crisis? After having missed out on some easy CL money? And paid to release Sarri? I think we could all see where I'm going with this.
Also, maybe having some competition next season or an improved midfield would have him perform better. Either way, I think it would be better to wait next year.