Saturday's 4-0 win away at Newcastle United provided David Moyes with many positives.
It gave the Red Devils their 10th away victory of the season - the most by any Premier League club this campaign - and it gave them the perfect platform for a trip to the Allianz Arena on Wednesday.
But aside from that, it proved what Shinji Kagawa is capable of when given a run of matches in the team.
Under Sir Alex Ferguson, the Japanese midfielder struggled to retain his place and often didn't reach the required level of performance in his preferred number 10 role.
But he has enjoyed a resurgence from the left-side of midfield under Moyes.
It seems now that United are turning away from their old philosophy, where they would always play with two out-and-out wingers, attacking teams with pace down the flanks - in favour of an approach where the four attackers all roam and very rarely have set positions.
Kagawa is one of the main beneficiaries of this. During the win at St James' Park, he looked at ease as he combined with Juan Mata, Adnan Januzaj and Javier Hernandez at will.
Many United fans lamented the use of the 26-year old from the left but in truth it has seen him flourish, as he frequently cuts inside, using the old tactic of making the ball do the work with intricate five yard passes and defence-splitting through balls.
His pass to set up Januzaj, who in turn fed Javier Hernandez for United's third, was inch-perfect. He has always been capable of that.
Even Moyes is realising what he can bring to the team, and he must retain Kagawa's services as he has often been linked with a move away from Old Trafford.
Kagawa could become a crucial player for the club in the years to come should he remain at United, and if Moyes can come up with a way to fit Wayne Rooney, Mata, Kagawa and van Persie in the same team, it is unlikely the Red Devils will endure a campaign as torrid as this one has been.
It says a lot that few have even mentioned van Persie lately. Kagawa is a big reason for this.
And if he carries on with the same form, he could be the player United fans always though he would be.
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