The fact that we wouldn't be paying Arsenal anything like the fee we are getting from Barca, leaves plenty of room for a sign on fee and a serious weekly paycheck, but all that assumes the player was committed. If I were to have a guess right now, I'd say it could be a £30m-£40m cheque to Arsenal, but possibly another £10-£15m to the boy on joining and north of £200k pw on wages (before bonuses).. but I think he'd be worth every penny, if he was up for it. The point raised above about us possibly getting 2 seasons out of him, before he'd want to go to PSG is probably spot on (assuming he was on for coming in the first place), so maybe just give him a 2 year contact and if we are doing well enough in 2 years time, and he's also doing well enough, then we go again for another year or 2. I'm not sure Lallana has anything like the creativity that Coutinho has, also he's a few years older so is likely to start to slow down now etc. Don't get me wrong, he's a good player, but not a replacement for Coutinho imho. Fair comments about the other two lads you've mentioned, but again not good enough to replace Coutinho as a creative attacking midfielder, imho.