Real Madrid are angry at the Champions League last 16 draw being redone after a technical error according to media reports in Spain on Tuesday but have not yet said if they will attempt to take action.
Emilio Butragueno, the club's former striking great and director of institutional relations, said it was "surprising, shameful and very difficult to understand what's gone on," after Monday's initial draw, which paired Real with Benfica, was scrapped.
Manchester United were initially drawn against Villarreal but that was a mistake because the two already played in the same group. United's name was then seemingly not included with the teams who could face Atletico Madrid.
The repeated draw set Real against Paris Saint-Germain, on paper a much more difficult challenge.
Sports paper Marca reported that behind the scenes Real were outraged and protested strongly to European governing body UEFA.
Relations between Real and UEFA were already severely strained by the Spanish giants continued commitment to a breakaway Super League.