Tremmel originally joined Swansea in 2011 and was released at the end of last season before re-joining the club on a two-year deal in August.

However, the 37-year-old finds himself behind Lukasz Fabianski and Kristoffer Nordfeldt at the Liberty Stadium and has subsequently joined Werder on a temporary deal subject to international clearance.

Tremmel will add experience to a Werder side that have found the going tough in the Bundesliga this term and they are third bottom of the table, although Viktor Skrypnyk's side did pick up a morale-boosting 3-1 at Schalke on Sunday.

It marks a return to Germany for Tremmel, who has had spells with the likes of Hannover, Hertha Berlin and Energie Cottbus in his homeland.