The post game show on MUTV - am completely blanking on the name of guy (not the bald one but, older guy) - talked about during the match he wasn't watching the ball much but, just kept an eye on Chicha. He talked about how the guy is just constantly moving and threatening to get behind the defenders. Because of his pace they end up pushing back a little and guarding against it.
Watching him briefly in Houston, that was exactly what I saw. Am not sure if you can get that from watching the games on TV where the focus is on the ball.
I think he'll really stretch defenses in that way. He may not be able to go toe to toe with big defenders but, they won't be able to also keep up with his movement and pace.
I definitely hope he gets some time on the pitch on Sunday, it will be the best way to tell if he is ready to go against PL level competition from the off. So far you can say the opposition was weak (or can you in the half against us which I haven't watched).