Arsenal's Bukayo Saka was approached by Real Madrid's injured star Dani Carvajal at half-time of the Champions League quarter-final and the incident could now lead to a ban.

Injured right-back Carvajal was seen in the tunnel area as the teams left the pitch at the Bernabeu on Wednesday night and the Spain international spoke to Saka, raising his hands as the England star made his way to the dressing room.

Carvajal placed his hand on Saka's neck and when the Gunners winger retaliated by pushing back, the pair were quickly surrounded by staff from both sides, including Gunners substitute Ben White, who confronted Carvajal.

Saka quickly made his way down the tunnel and was completely blameless in the incident, and Spanish publication Marca have now confirmed what many thought was the reason for Carvajal's anger.

They claim that the six-time Champions League winner was unhappy with what he saw as a 'disrespectful' move by Saka to take a Panenka penalty against Real Madrid at the Bernabeu, with Thibaut Courtois easily saving the Arsenal star's first-half effort.

Saka's miss ultimately had little effect on the outcome of the quarter-final, as the Gunners held on to their 3-0 lead from the first leg to progress to the semi-finals with a 5-1 aggregate victory over Paris Saint-Germain.

As a guest in the stands and not part of the squad, Carvajal was not allowed to be in the technical area during the game and broke UEFA rules by heading in at half-time.

He could now face a UEFA ban similar to that handed to former Real Madrid midfielder Xabi Alonso, who ran from the stands and down the touchline to celebrate his side's Champions League final win over Atletico Madrid in 2014.

Alonso was suspended for the final and not allowed to head the pitch, and he was also banned for Real's UEFA Super Cup final against Sevilla early the following season.