Flick backs Lamine Yamal's angry reaction after substitution

• Lamine Yamal reacted angrily to being substituted during Barcelona's 2-1 UCL win against Eintracht Frankfurt.
• Coach Hansi Flick understood Yamal's frustration, stating it was an acceptable reaction from a player.
• Yamal assisted Barcelona's winning goal but will miss the next UCL match due to yellow card accumulation.
• Yamal set a new Champions League record with 14 goal involvements (7 goals, 7 assists) as a player under 19, surpassing Kylian Mbappe.
• Barcelona secured a 2-1 comeback victory, marking their fifth consecutive win after conceding first.

Why It Matters: It shows how coaches manage young talent's emotions and team dynamics.