Called back into the Manchester United side after sitting on the bench against Liverpool, striker Danny Welbeck has been hailed as the missing link which makes the side tick.
The Englishman was singled out by SkySports pundit Jamie Redknapp for a praise after his display in the 3-0 win over Greek champions Olympiakos.
The former Liverpool captain said: "The the pace he showed, he deserves a special mention.
"He makes such a difference. He can turn a team, from minute one, winning free kicks, making things happen, he was fantastic to watch. Where does Mata come into the equation now?"
Welbeck's omission against Liverpool certainly does not look so smart on reflection; especially given the impressive cameo impact he made against West Brom a week earlier when he replaced Robin van Persie.
Against Olympiakos he was at his best, illustrating the facets of his game which make him a livewire for defenders to handle, and that he is about far more than scoring goals.
Welbeck did not manage any shots on goal, but won three fouls for the Red Devils, won three aerial duels, and completed three successful dribbles.
What he does so well is worry teams with his pace and trickery, and put defenders on the back foot - and create space for his teammates; essentially making the team better by being part of it.