Born in Lambeth, London, Euell rose through the ranks at the Wimbledon youth academy. He made his senior debut in the 1995 UEFA Intertoto Cup, as a substitute for Grant Payne on matchday one, against Bursaspor. After scoring on his league debut in October 1995 against Southampton as an 18-year-old, he went on to make further a further eight Premier League appearances, and scored one more goal, in the 1995–96 season. The following season he made a total of eight appearances, scoring two goals. In 1997–98 he began playing more regularly, making a total of 23 appearances, scoring eight goals, including three goals in three FA Cup games.