Difficult to tell from that angle, but you should always give the officials the benefit of the doubt.....
Look at distance last defender is from 18 yard line, then distance Chaplin is from it... Yep off side
Wow, it’s much easier to see the lines on my phone screen than the laptop one. I change my mind, it was JUST offside. Not that it matters now anyway
Good call. His left leg is offside. The striking feature of that move, is that the gegenpressers were out-gegenpressed there.