Oliver Willis is a defender from Norwich who joined City's Academy as a scholar in the summer of 2002. He had been with the Canaries as a schoolboy beforehand, experiencing both the agony of a missed penalty in the shoot-out against Wycombe in the FA Youth Cup, and being named Pink Un man of the match for his performance against Ipswich. Olly was also part of the Norwich Under-12s that swept away all that opposed them incouding a 14-0 thrashing of Ipswich. Sammy Morgan said in the summer of 2003 that "Olly may be small in stature but he's got a big heart and he's a tremendous competitor".

On January 26th 2005, Norwich announced that they would not be offering professional contracts to third year scholars .Adam Smith, Lee Blackburn, Olly Willis and Nicky Howell. "We've worked with the boys and when it comes to the crunch, a decision has to be made," said Nigel Worthington. "Unfortunately, from their point of view, the boys will not be taken on. We will do everything we can to help them move forward, whether that be in football or another field". Ricky Martin added the timing of the decision was made to give the players the chance to make other plans. "We've looked to make this decision at this time to enable the players to finish off the educational element of their scholarship and to make a decision as to whether to pursue their career with trials at another football club or to apply to university."

Along with Nicky Howell, Ollie was reported to have joined Team Bath in the summer of 2005. However both of them played for Robert Taylor's Dereham Town on the opening day of the 2005/6 Ridgeons League campaign against Halstead (13th August 2005). Ollie was in the Dereham side that narrowly won the Norfolk Senior Cup final 1-0 against Paul Franklin's Norwich United on 19th April 2006.

Ollie has a younger brother Sam who joined him at Dereham in the autumn of 2005.