Swansea goalkeeeper Michel Vorm will require a knee operation at some point this season, manager Michael Laudrup has confirmed.
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Vorm, 30, joined the Swans from FC Utrecht in 2011 and has proved to be an inspired piece of business from the Welsh club. A key player at the Liberty Stadium, Laudrup confirmed the Netherlands international will require an operation, but no decision has yet been made as to when he will go under the knife.
Gerhard Tremmel started in goal for the Swans for Monday's 1-1 draw at home against Hull City, with 18-year-old Slovenian goalkeeper Gregor Zabret on the bench.
With an expected recovery period of four to five weeks for Vorm, Laudrup conceded he may need to bring in cover in the January transfer window.
"Let's see," Laudrup told BBC Sport. "It depends when we can do it [Vorm's surgery].
"We have games, and there are times when we have very many games, and times when we have less. But we always have games and you can't play with one keeper. That's much too risky. If something happens to Gerhard then we would have to play with an 18-year-old who is not an experienced goalkeeper. That's not good for him or for the team."
Vorm is still set to travel with to Switzerland for Thursday's Europa League tie against St Gallen.