Trading Mistake, Region Locked Pokemon

[Riotpopper]

Ok, so my bud Hooligan32 on gold server was helping me trade evolve my Haunter, he asked me to trade evolve his Kadabra.  I was clicking through the prompts and didn't notice it say Kadabra was a different region, turns out it was Sinnoh.  I only just beat Johto. 

I really want to get him his Kadabra back, as it is a super good mon he worked hard EV training and hunting, but I don't want to rush the storylines to get to sinnoh.  Is there any way this pokemon could get removed from my box and sent to him?

Included is an image of the kadabra locked in my box.

I already rushed Johto and really don't wanna rush through Hoenn just to trade it faster and Hoenn takes a long time anyways.


I'm Riotpopper in gold, they are Hooligan32 in gold