Arsenal's Premier League title bid was hit by a stunning 2-1 loss to Bournemouth at home on Saturday.
The league leader blew the chance to move 12 points clear of second-place Manchester City after losing for the third time in four games in all competitions.
Alex Scott struck a 74th-minute winner at the Emirates to pile pressure on Arsenal ahead of next week's top-of-the-table clash at City.
Mikel Arteta's team has played two more games than City, which could close the gap to six points if it beats Chelsea on Sunday.
