Lyon were booed off following a dismal defeat to Rennes, who moved into fourth thanks to youngster Eduardo Camavinga's late strike that gave Rennes their fourth league win in a row.
Dong cherishes old photos of him tussling with Wayne Rooney in training, signing for United with a smiling Ferguson and playing with Ronaldo.
"The performance was really, really good... You can't control a game away from home much more than that," said Potter.
Dong admits that his time at Old Trafford from 2004 to 2008 was a tale of injury, crippling shyness and ultimately unfulfilled potential.
He added, "We have Nadal, Djokovic, Federer, who are there, and have always been there. And what I need to do is go the extra mile and surpass them and that's going to be the biggest challenge for next year, I need to surpass one of them in order for me to finish in the top-three next year."
The Hammers found themselves fourth on Christmas Day of the 2014-15 season but they have not kicked on, acting closer to the yoy-yo side of years past. The team has been in the Premier League since and took over the London 2012 Olympic Stadium in 2016.
Tottenham Hotspur, beaten 2-0 by Liverpool in last season's final in Spain, will lock horns with Bundesliga leaders RB Leipzig, who are through to the knockout stage for the first time. Spurs can count on the experience of new coach Jose Mourinho - a two-time winner of the competition, with Porto in 2004 and Inter Milan in 2010.
Depay has scored eight times in his last eight matches in all competitions for Lyon, including the goal that took them to the last 16 of the Champions League midweek.
Mbappe put the cherry on the cake in the final minute as the home fans let off a cascade of fireworks in the stands to celebrate the birthday of one of their hardcore supporter groups.
"It means a lot," Murray said after his triumph. "The past few years have been extremely difficult... I didn't expect to be in this position at all, so I'm very happy."