Kagawa had a great game against Bayer Leverkusen on Wednesday, however regardless of what he did he can expect a place on the bench on Sunday against Tottenham if Robin Van Persie overcomes his latest injury.
Despite having talents equatable to Van Persie and Wayne Rooney, Kagawa has been a victim of a long standing tradition of Man Utd's: wingers. In his first season with United, Sir Alex Ferguson preferred to play with two wingers: Antonio Valencia on the right; Ashley Young on the left and Nani rotating between the two.
Both Ferguson and Moyes experimented with Kagawa on the wing, but his lack of versatility has worked against him and has since found his place on the bench. This season Moyes has continued the tradition and Kagawa's place has been made almost untenable with Adnan Januzaj making a name for himself on the left wing. It seems a shame that someone as supremely talented as Kagawa has to settle for a place on the bench, but for now this how it has to be.
Each team has their own philosophies that are steeped in club tradition and has been the bedrock of all their successes: Ajax have total football; Arsenal equally play from back to front; Barcelona have tiki-taka; Real Madrid have their galactico policy; Porto scour the world for the cheapest talent, selling them on for mega profits and United are a team that are synonymous with wingers whipping the ball into a striking duo. Before the current bunch of wingers plying their trade at Old Trafford, it was Cristiano Ronaldo who wowed crowds with his dynamic skills; before him Ryan Giggs motored down the left wing; before him David Beckham whipped in the best crosses for forwards to feed on; before him Kanchelskis, Sharpe and even George Best.
The tradition is one that predates Alex Ferguson and Moyes would be a fool to tamper with it, you only have to look at United's rivals to see how wrong it can go. Liverpool whose slogan: "pass and move its the Liverpool groove" won them so many titles between the 70s and 80s. Since tampering with it in the 90s, they have only won trophies sporadically. More recent examples are AC Milan who have ceased spending and have ceased being a top team and Tottenham who have stripped themselves of wingers and are now a slow team, void of tempo and void of goals. Transition is tough and it is foolish to make transition tougher than it need be by changing systems.
To play devils advocate, United could easily find space for Kagawa if they changed from 4-4-2 and 4-2-3-1 to a diamond 4-4-2 without wingers. Kagawa would be at home at the tip of the diamond. The problem is while he would comfortable, United as a whole would suffer.
Diamond 4-4-2 requires a superb midfield who are adept in controlling the ball in tight situations, transitioning from defence to attack quickly and protecting the wings from exposure. AC Milan's midfield in the 00s is the perfect example: Pirlo was the deep-lying playmaker at the base started every attack; Gattuso was the midfield destroyer; Seedorf was the box-to-box midfielder, strong in defence and attack and Kaka as the dynamic attacking midfielder who could in seconds link the midfield to the attack. Milan had enough creativity and defensive solidarity to be a hugely successful team, perhaps second only to Barcelona in recent years.
Compare that to United and immediately problems arise: Carrick aside (who is quite far behind Pirlo), United do not have a player who can break up play like Gattuso, nor do they have a player capable of defending and attacking like Seedorf.
Therefore despite showing what he can do in the middle when he scored a hat-trick against West Brom, as long as 4-4-2 or 4-2-3-1 with Rooney behind Van Persie remains, Kagawa is doomed to be on the bench.