If ya want it, great, you could continue to train it back to your loft and ya got ya self a good racer for next year as an old bird.
Once the transfere is signed the bird becomes your responsibility and should ya send it, lose it and its reported you got ya self a problem £23 Amtrx etc.
I personnally wouldn,t send it as a y/bird.
Also ask him for a copy Pedigree as once ya find out what it is really off you may not want to keep too long.