It would offer an interesting fluidity especially if you could develop Brewsters link play and have him an McBurnie interchange throughout the game as I’ve seen flashes from Brewster especially for mcburnies chance against West Ham that he does see the game well enough to drop deep and provide assists as well as the technical ability to execute it. Mousset would be more one dimensional and only really play as an out and out striker as for all his good qualities his link play isn’t one of them. In terms of gray im not sure I could see him playing narrow in behind a 9 but if a player like him came in then it gives the option to play a wider 3 with Burke. Also I wouldn’t rule out us trying to develop a winger into a 10 again given what happened with Duffy.