Diego Simeone singled out Atletico Madrid defender Reinildo as the guilty party for allowing Manchester United to equalise late on in the first-leg of their Champions League contest.
The two side's met for the first time since 1991 at the Wanda Metropolitano for a round of 16 contest that has left it all to play for when they reconvene at Old Trafford next month.
The hosts took the lead after Joao Felix scored a delightful header that cannoned off the upright before beating the rooted David de Gea.