My line up for next season :
Tammy
Werner ziyech
Harvetz
Kante kovacic
Chillwel Silva zouma James
Kepa

Werner will play best for us at the left, With a bigger striker. And he will benefit from ziyech's trademark crosses from the right

I'm not counting pulisic out though. If he sorts his injury problems and stays fit, wener can mover to the Number 9.
But I feel it would be difficult for Werner as a 9.

Also mount. I don't think lampard should use him together with Harvetz. The team will not be balance. One of them has to drop to the bench.