The home of Paul Pogba was burgled during the game.
The French player came on after 67 minutes.
Pogba said "our family's worst nightmare was realised when our home was broken into ... while our babies were sleeping in their bedroom".
The family's nanny was at home at the time, and that's where the reward is for anyone who can help.
There are two children in the house.
The 29-year-old has been at United since re-joining the Old United club in a then-world record 89m transfer from Juventus.
His contract ends in the summer.
My wife and I rushed home because we didn't know if our children were okay.
As a father, there is no feeling worse than not being able to protect your children and I hope that no-one ever has to feel what I did last night.
Joao Cancelo was injured when he tried to fight off a group of people during a break-in.
In January, the wife of Victor Lindelof said her family were the subject of a break-in while the centre-back was playing.
Manchester United are working with their players to strengthen their home security.