The former England No 1 is wanted at Upton Park as cover for England international Rob Green.
He said: "I still believe I can play at the highest level and know I can get back there. There has been a lot of interest but nothing concrete.
"My plan when I came back to Ipswich was to get back into the Premier League. I was dropping down to a club who were heading in the right direction, but it doesn't always work out.
"Hopefully, it will be a fresh start and exciting times for me. I believe in my own ability.
"It has been a frustrating year because of injury but I cannot wait for a new challenge."