The Champions League semi-final between Atletico Madrid and Arsenal on Tuesday night ended with handshakes and respect—mostly. But in the dying moments of stoppage time, the tension boiled over into a fiery confrontation between two familiar faces.

With the clock winding down, an animated Diego Simeone spotted a figure on the touchline making emphatic gestures toward the referee. That figure was Andrea Berta, Arsenal's Sporting Director and a man Simeone knows all too well. Berta, who spent eight years as Atletico's sporting director, was signaling wildly for the final whistle—a move that didn't sit well with the fiery Argentine manager.

Simeone charged toward Berta and shoved him, igniting a brief scuffle that required intervention from staff members and the fourth official. The incident earned Simeone a yellow card, though he later argued he was simply telling Berta to leave the pitch area. Arsenal manager Mikel Arteta also picked up a booking during the chaotic stoppage time for his own sideline antics.

The clash carries extra weight given the pair's shared history. Berta and Simeone worked side-by-side at Atletico Madrid for nearly a decade, building a team that won La Liga and reached two Champions League finals. However, reports have long suggested friction behind the scenes, particularly regarding player recruitment. The most notable point of contention? The club's record signing, Joao Felix, whose arrival and subsequent struggles became a symbol of their strained relationship.

Berta left Atletico 18 months ago, eventually landing at Arsenal. Since his departure, Atletico's hierarchy shifted, with Director of Football Carlos Bucero and sporting director Mateu Alemany taking the reins on transfers—a move that reportedly gave Simeone more influence in the market. Tuesday night's altercation suggests old tensions don't fade easily, even when the final whistle blows.