Welsh, 25, progressed through the Liverpool youth ranks but never made the grade at Anfield and joined Hull in 2006 in a swap deal involving winger Paul Anderson.
A combination of Hull's success and sheer bad luck with injuries reduced Welsh's first-team prospects greatly and last season he was sent out on loan to Chester, Carlisle and Bury.
Then John Barnes came calling with the offer of a two-year contract this summer and Welsh said: "During the first conversation I had with the gaffer he told me how he wanted to play football and that
he wanted to bring passion to the club.
"That's similar to me because I think I'm a passionate player and I like to play football, so it was brilliant to hear that from your manager.
"The fans can certainly expect passion from me. I will be going in for every 50-50 and 60-40 tackle and when I win the ball I'll try and pass it to the players who can create things and win games for us."