Would it be a dilemma for Manchester United, or a simple refusal?
Shinji Kagawa was Manchester United's statement signing early last summer, and the man they were meant to build their next great team around.
That was until Robin van Persie was signed. The Dutchman's addition pushed Wayne Rooney into a deeper role, and Kagawa often saw himself shunted out wide, or on the bench in the big matches.
He has had his moments, a hat-trick against Norwich, and his two game-turning assists away to West Ham two recent examples of his effectiveness, but the Japanese playmaker himself has admitted he is a little underwhelmed with his overall contribution to United's title winning side.
"Honestly, I haven't contributed as much as I did at Dortmund. I was even injured. I still don't quite have that feeling of accomplishment."
Now here's a theoretical question -
Borussia Dortmund have just seen star player Mario Gotze tempted away from them, after a 37 million Euro clause in his contract was activated by rivals Bayern. This will leave them flush with cash to spend, so what if they tried to buy back Kagawa?
If Dortmund came in with a £20 million bid, higher than the £16.8 million United paid for the playmaker last summer, what should they do?
It would allow them to turn a slight profit, giving them instant cash to spend on players who Sir Alex Ferguson may feel fit his system with Van Persie better than Kagawa does.
Now we are not saying United should be looking to sell Kagawa, nor is the player looking to move; but Dortmund probably are the only club who can tempt him - where he remains a hero after two title winning seasons in the Bundesliga.
He will want to see through his job at United and accomplish the goals he has set himself to succeed, but watching Dortmund destroy Real Madrid last night will have toyed with his emotions.
Dortmund will have to spend their money on a playmaker this summer, and there is nobody their fans would rather see them sign than Kagawa.
And the question is not so theoretical, with German newspaper Bild claiming they would at least consider looking at the Japanese ace.
For the Germans, making a bid is a no-brainer, but what United should do in response on the other hand... is a little more unpredictable.
What would you do if such an offer came in?
image: © wuestenigel