Former Brazil international Ronaldinho has revealed what the outcome will be if Manchester United get the first goal against Barcelona in the second leg of their UEFA Champions League quarter-final clash.

Barcelona lead the tie after a one nil win over United in the first leg and head into the return fixture at the Camp Nou as favourites.

The 39-year-old believes Ernesto Valverde’s men will comfortably go through to the semi-final, but admits that the first goal of the game will be crucial.

The former Barcelona star said: ‘If they [Man Utd] can score the first goal then it’s going to make the stadium nervous – and you never know what can happen then.’

Ole Gunnar Solskjaer’s side head into the game on the back of a less than impressive 2-1 Premier League win over West Ham United last Saturday.

Just before the start United’s game against West Ham, Barcelona played a goalless draw with Huesca, a side that is 20th in the La Liga.