RUBEN AMORIM is not taking progress to the Europa League final for granted as he admitted Manchester United have a tendency to “lose our mind a little bit” when the going gets tough.

The United boss believes his side need to score in Thursday night’s semi-final second leg against Athletic Bilbao despite boasting an authoritative 3-0 lead.

The Red Devils enjoyed one of their greatest ever European away days last week as Casemiro’s header was complemented by a Bruno Fernandes brace after Dani Vivian’s red card at a stunned San Mames.

All 133 teams in the competition’s history to have scored three or more goals away from home in the first leg have progressed, with odds of 40-1 on absentee-hit Athletic reaching the final in their home city underlining the task at hand.

But there is little chance of Amorim’s men becoming complacent, especially given United are enduring their worst campaign of the Premier League era and escaped with a jaw-dropping comeback against Lyon in the previous round.

“If you look at our season, anything is possible, so we have to understand one goal can change anything, the momentum of the game,” Amorim said.