Mikel Arteta says Arsenal have not complained to the PGMOL about the rough treatment on Bukayo Saka - but referees are "aware" of opposition tactics.
Gunners manager Arteta said they have "daily communication", but "nothing specific" on that topic.
"I think the referees know the tactics of the opponents and that some players invite more tackles," he said.
Arteta, whose side are fourth in the Premier League and host Liverpool in the FA Cup third round on Sunday, added: "I think that's been going on for two years. We have wingers that provoke a lot of fouls and attention.