Barcelona forward Neymar was involved in a spat with a Manchester City fan at the closing stages of the Champions League game at the Etihad Stadium on Tuesday.
Neymar was substituted in the 80th minute of the last-16 first-leg game, which Barca won 2-1, and footage posted on YouTube shows the 23-year-old initially remonstrating with a section of City's support from the visiting dugout.
Once the full-time whistle was blown, the Brazilian then walked to the pitch side and looked to be in a heated discussion with one City supporter in particular, with stewards intervening to defuse the situation.
The footage may slightly sour an otherwise excellent night for the Spanish giants, who took a giant stride into the quarter-finals of the Champions League in Manchester.
Former Liverpool forward Luis Suarez scored twice on his return to England although City striker Sergio Aguero narrowed the deficit before Lionel Messi missed an injury-time penalty.
