Arsenal winger Bukayo Saka was seen having ice applied to his ankle after being substituted against Ipswich.
Saka was withdrawn in the 57th minute at Portman Road as he was replaced by Ethan Nwaneri.
In the first half Ipswich's Leif Davis received a straight red card for a rash challenge on Saka.
Saka was able to continue playing but manager Mikel Arteta elected to take him off in the second half.
Arsenal ran out 4-0 winners as they made Liverpool wait for the Premier League title.