Detailed Instructions: In this task, you're given a statement, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.
Q: Context: He didn't feature for the club for one month until he came on as a half-time substitute for Jon Wallis on 26 December in a 11 draw with Bristol City. Link Information: Jonathan Kevin Wallis (born 4 April 1986 in Gravesend) is an English footballer.

Career.He progressed through the youth ranks at Gillingham and signed his first professional contract, at the beginning of the 200506 season Question: When did the player Clohessy substituted for on 26 December begin his professional career?
A:
Answer: 2005