Swansea winger Dyer signs new four-year deal

"I am still trying to improve as a footballer and I feel I can do that here," the 25-year-old told the club website (www.swanseacity.net) on Tuesday.

Swansea City's Nathan Dyer is challenged by Fulham's Dimitar Berbatov (R) during their English Premier League soccer match at the Liberty Stadium in Swansea

"You look at the potential of the club when you are making key decisions like this and I don't see the club going downhill in any way. I can only see it going up and up."

Dyer joined Swansea, who will feature in their third successive Premier League campaign this season, from Southampton for a fee of 400,000 pounds ($613,200) in 2009.

($1 = 0.6523 British pounds)

(Writing by Tony Jimenez; editing by Robert Woodward)