Liverpool may have to relinquish the advantage of playing at home in the second leg if they reach the semi-finals of the Champions League.
The Reds have been handed a quarter-final tie against Porto with the first leg at Anfield on April 9 and the return game at Estadio do Dragao on April 17.
And the reward if they get past the Portuguese champions is a mouthwatering last-four clash with either Barcelona or Manchester United.
The draw has Liverpool down to play the first leg of a potential semi away with the second leg at Anfield.
However, if Manchester City and Manchester United both progress to the semis then Liverpool’s last-four tie would be reversed.
Under UEFA rules, two clubs from the same city aren’t allowed to play at home on the same day or even on consecutive nights.
As United finished lower than City in the Premier League last season, United’s fixture would have to be moved.
That means if it’s Liverpool v United in the semis and City are still in contention for glory then the Reds would face Ole Gunnar Solskjaer’s side in the first leg at Anfield with the second leg at Old Trafford.
There was the same scenario with the quarter-final draw with United drawn away to Barcelona in the first leg. Instead they will play at home first to avoid a clash with City’s all-Premier League clash with Tottenham.