Boaz Myhill has rejoined the club only weeks after being formally released.
The former Hull City stopper was released when his deal expired at the end of June but had been training with the club over the summer.
After transfer target Simon Moore had signed a new deal at Sheffield United, Albion turned to Myhill to provide competition for fellow new signings Sam Johnson and Jonathan Bond.
“I’m as happy to sign,” said the former Wales international.
“I’ve had to go through the process. I’ve had to show that I was hungry to be here. I’ve had to show humility to come here every day without a contract. I’ve had to show that I’m still a good keeper and that’s why we’re here now.
“I’m happy to help in whatever way I can. I’ve obviously played at this level. In the last two teams I was involved with in the Championship we’ve finished third so I know I am a good keeper in this league.
“I have spoken to Sam and ‘Bondy’ - they’re different characters to each other and to me and I think Neil (Cutler) was keen to add my experience in that mix. But I also accept that the Club needed to move away from a lot go older players across the board. I’m pleased to have signed.”