Merino missed the Gunners’ most recent match - against Crystal Palace last Wednesday - and was a doubt for the first leg of Arsenal’s semi-final against PSG at Emirates Stadium on Tuesday. The Spaniard, however, took part in training on Monday afternoon and is expected to be fit for the game.

Previewing Arsenal's Champions League semi-final first leg clash with Paris Saint-Germain. Includes how to watch on TV, team news, score prediction and full bui

PSG head coach Luis Enrique - ' [Arsenal] have been doing a remarkable job with their coach for several years. We all deserve to be here.'