If you have a chance to employs someone even if his speciality is different than your target will you accept him?

Why not as long as you found in the applicant for the job is qualified and sense the commitment to the job with the ability to learn new techniques even if not with the matched speciality. N.BNot far away from his major

Depends on the specifics .... i,e, the employee and his credentials ... and the job and what it requires as a MUST, and what it desired as NICE TO HAVE.