In the past we've seen Coquelin, and Arteta for that matter, favor defending the left flank as the right flank was less porous with Sagna and then Ramsey/Bellerin. Bellerin and Walcott have been able to form quite the defensive understanding and so I would like to see Coquelin resume that shift (with Santi more central/right sided) as having him ahead of Kos means that side is very well protected.
Seemed against Ludo that Coquelin had that going in the second half (when he pulled off a lot of his nice interceptions/dribbling) but in the first he was a little more scattered. I would like to think that was addressed at half, or that Coquelin has the wherewithal to understand why protecting that side is important.