Losing Havertz would be a hammer blow for Arsenal and leave them with just three fit forwards in Ethan Nwaneri, Leandro Trossard and Raheem Sterling. One of that trio would have to lead the line, unless Arteta got incredibly creative with his problem solving.

Ethan Nwaneri is required to use a separate changing room due to the Premier League safeguarding regulations which mandate that players must be 18 or older.

Kai Havertz has suffered a serious hamstring injury that threatens to sideline him for the remainder of the season, CBS Sports understands. Arsenal flew back from their warm weather training camp in Dubai on Tuesday for Havertz to undergo tests that have confirmed their worst possible fears.