"That's where the problem came. A lot of the players were getting angry because they couldn't get to them to see if they were OK. I don't know. We need to wait and see the officials what really happened."
Tensions did later turn to celebration as the visitors joined the party with their travelling supporters, as West Ham will have the chance to win their first piece of major silverware since 1980.
They will face Fiorentina in the final after the Italian side's 4-3 aggregate win over Basel, as an extra-time 129th-minute goal from Antonin Barak prompted jubilant scenes on Thursday evening.
