Lenny Pidgeley has become Millwall's second capture within 24 hours after securing his return to The Den.
The former Chelsea shot-stopper enjoyed a brief loan spell with the South Londoners last season and was happy to return.
Pidgeley is the club's second arrival following the signing of pacey striker Darren Byfield on Thursday.
The 22-year-old was well down the pecking order at Stamford Bridge and is now looking forward to helping The Lions make a swift Championship return.
"I was here for a brief period on loan last season and really enjoyed my time," Pidgeley told the club's official website.
"There's a good bunch of lads here, and although I've got a year left on my contract at Chelsea, I wanted to come back to Millwall.
"It's important for me personally to try and establish myself as first choice goalkeeper, but at the same I want to help the club get back to The Championship."