Width
Your width argument falls down at the fact that sterling hardly ever plays on the right and hasn’t done regularly since 18/19.One thing I'd say abut Sterling is, he certainly knows the city/pep system like the back of his hand.
He has had some howlers but on the whole he has been very consistent
I'd like to keep him because of his pace and ability to stretch the game - the problem with Mahrez , Grealish, Silva and Foden despite being world class they are inverted wingers so that would suggest to me we're going to rely very heavily on our FB's next season to create the width and the balls in to Haaland.
I just can't forget how freighting we were when we had Sterling Aguero Sane and I was hoping we could recreate that this year but it seems very unlikely.
I think Serge Gnabry would be an excellent replacement but I would imagine after we sign either Cucurella or another LB our business will be done.