#1 Man mark Benfica's marksman Jonas
Benfica's Brazilian star - Jonas has been one of the most consistent goal scorers in Europe ever since he moved to Benfica in 2014. The 33-year-old has already scored 10 times this season and is looking in a good shape ahead of the Manchester United clash.
He is one of the best finishers in the world and is excellent with the ball at his feet. Jones, Lindelof, and Smalling will have a tough time against Benfica's prolific marksman. He is intelligent off the ball and makes good runs into the 6-yard box. Herrera will most likely be given the job of tailing the Brazilian.
Mourinho will be aware of the threat Jonas could pose, and keeping him quiet will be key to United's success in Portugal.