I'm in "Arteta Knows" mode on this one.
Find it hard to believe he and Edu would have advocated a £65m spend on a guy who wasn't going to cut the mustard.
Havertz has had his confidence hammered for a couple of seasons being played out of position and then in an absurdly unstable, chaotic and badly organised team. If it takes him a minute to recover his mojo that's normal.