Three wins, eight goals scored and just one conceded means another United win is just 1/4 (1.25) with Betfair but they online firm have a fantastic offer available to anyone yet to open an account with them.
New customers can take a massive price of 18/1 (19.0) on the red-hot favourites to see off Benfica at Old Trafford.
To take advantage of the 18/1 (19.0) simply register using the link provided, back United at the current price shown on site and if they win then the returns will be topped up to the value of the enhanced price. £1 max bet, winnings paid in free bets. T&C's apply. Not only that, but there's also up to £100 in free bets on top of this huge price enhanced price for Tuesday's clash.
The reverse fixture ended 1-0 to the Premier League side - courtesy of a goalkeeping mistake from Benfica's Mile Svilar - but the Portuguese outfit have not fared well in this competition overall and are rooted to the bottom of Group A without a point.
Not only that, but the visitors were thumped 5-0 on their last Champions League away day at Basel and the odds suggest that they are likely to be on the end of another defeat as they make the trip to Old Trafford, where United have won their previous five matches in all competitions by an aggregate score line of 16-1.
With a place in the last 16 up for grabs if Mourinho's men can secure the win and the other result goes in their favour, there should be no complacency from the hosts who may well attempt to put the game to bed as early as possible given their upcoming clash with Chelsea in the Premier League on Sunday.
All in all, the 1/4 (1.25) looks likely to be a pick for plenty of accumulators but the chance to take 18/1 (19.0) on Manchester United to beat Benfica should prove a popular option for those who are opening a new account with Betfair before kick-off.