The former Reading, Wolves, Fulham? and Colorado Rapids stopper was released by Mick McCarthy in the summer and will now join the Toffees as back-up to fellow American Tim Howard, according to reports.
Blue boy: Hahnemann is heading to Everton
Slovakia international 'keeper Jan Mucha has been the reserve at Goodison Park and was in the starting XI for the midweek Carling Cup clash win over West Bromwich.
Moyes now has options for the No 1 spot after taking advantage of the fact that free agents are allowed to sign for a team despite the transfer window being shut.
Howard is expected to be reinstated for the crunch weekend clash with Manchester City.
Moyes said: 'It isdifficult when you only have two senior goalkeepers - it only needs oneof them to go down and then you are in trouble.
'Marcus is friends with Tim. It is after the transfer window has closed and we had to look for someone who we knew.
Don't think Mucha him: The Slovakian keeper is no longer first reserve
'I would have liked to have got somebody before the window closed if we could, but there were other priorities at the time.
'It gives me someone who can help in the reserves and if we get an injury to a goalkeeper, he has got good experience of the Premier League and we can use him as back-up.'Hahnemann arrives at Everton following a two-year spell at Molineux and he previously played in the Premier League with Reading.Meanwhile, Toffees youngster Jose Baxter has joined npower League One side Tranmere on loan for a month.
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Source: Daily Mail
Source: Daily Mail