ARSENAL transfer target Dayot Upamecano got himself sent off after receiving a second yellow card for kicking the ball away in anger.
The RB Leipzig defender was given his marching orders in the 43rd minute of his side's Bundesliga match against Paderborn.
Julian Nagelsmann's men had to defend their 1-0 lead with ten men for the entire second half.
Patrik Schick's 27th minute strike appeared to be enough for the third-placed side to take all three points.
But bottom club Paderborn struck in the second minute of stoppage time.
Paderborn skipper Christian Strohdiek's goal deprived Leipzig of two points and made Upamecano's avoidable sending off all the more costly.
Chelsea-bound Timo Werner helped set up Leipzig's opener but the German forward could have secured the three points for his side.
The 24-year-old missed a late opportunity to seal the win when his shot brushed the crossbar.
The Gunners are thought to be interested in French 21-year-old Upamecano to strengthen their options at the back with Brazilian David Luiz potentially leaving.
The North London side had a £55million bid rejected last summer and may go back in for Leipzig's defender in the next window.
Arsenal reportedly emerged as favourites to land his signature after German giants Bayern Munich pulled out of the race but the player's agent cast doubt on whether a big-money summer move would go ahead.