Ramsey on right wing doesn't work against pressing teams. He likes to drift into the center, which forces Bellerin to push up, and often leaves masses of space for others to run in to (especially with Mertesacker there). The only reason we haven't suffered as much is because Monreal has had practice at CB, which means when Bellerin pushes up, he can stay back, and we are essentially playing with 3 CBs (as well as Bellerin being pacey af).