Arsenal will miss Partey’s physical presence, which was an asset when they beat PSG in October, and Merino will need to live up to his nickname of the ‘Duel Monster’ to stop Joao Neves and Vitinha running the show. The midfield battle will be key, but not as intriguing as the one out wide.

Anyone in the UEFA Champions League semifinals can win it. Here's why Arsenal, PSG, Barcelona and Inter Milan will (and why they won't) win it.