If he wants to go, and MU come with the bread there's not much AM can do. Since Woodward is being a little more ruthless, I don't think much games will be played
AM cant buy a player to replace him if they are banned.I doubt they willing to let him go that easy for now.Morata could be another option.
Lukaku is the safer option for Man utd, proven goal scorer in the premier league. I doubt Lukaku would want to link up with Mourinho after not showing faith in him at Chelsea. Harry Kane is another option but I doubt Harry Kane would leave Tottenham though, their project is exciting, beautiful football, new stadium, young players etc.
Man utd also need a player maker to help create chances for a striker.
Sooo many strikers available in this window, teams should be smart, even Arsenal can sign a star striker if they willing to spend.