One of Gabriel Martinelli or Leandro Trossard could leave Arsenal in the summer transfer window as part of a forward line reshuffle, Arsenal Insider understands. It comes as the Gunners are preparing for a huge few months ahead when it comes to the shape of their squad.

Real Madrid eked out a 2-1 home victory over crosstown rivals Atletico Madrid, while Arsenal and Aston Villa scored emphatic first-leg victories as the Champions League last 16 kicked off on Tuesday. In the night's fourth tie, Lille gained a 1-1 draw at Borussia Dortmund.