Arsenal legend, Thierry Henry, has warned his former team that there is no point even turning up for their Champions League quarter-final against Real Madrid, unless they believe they can cause an upset.

On Wednesday night at the Riyadh Air Metropolitano, Argentine forward Alvarez stepped up to take Atletico Madrid's second penalty in their shootout against rivals Real. After originally scoring his spot kick, Alvarez was controversially denied by VAR as he was adjudged to have made contact with the ball twice.

Thierry Henry has provided Arsenal with some advice on how to beat Real Madrid in the Champions League. The two sides will face each other in the quarter-final.