Aaron Cook is likely to take his case over his non-selection for London 2012 to the Court of Arbitration for Sport after the British Olympic Association rejected his latest appeal and refused to re-open the case.
The world number one in the -80kilogram class was controversially overlooked in favour of Lutalo Muhammad for this year's Games and has sought to overturn this decision, with the BOA requiring three selection meetings before they were satisfied.
Cook's camp maintain the GB Taekwondo selection process was flawed and his lawyers Harbottle and Lewis outlined their case, including new evidence, in a letter sent to the BOA last week.
After taking advice from in-house and external counsel, the BOA ruled on Saturday there was not sufficient new evidence for GB Taekwondo to be forced to re-open its selection process.
In a statement released on Sunday, Cook expressed with his frustration with the decision before outlining his plans to take his case to CAS.
"Aaron and his team strongly disagree with the BOA's position and they responded to the BOA in writing last night," the statement read. "CAS is set up to deal with Olympic disputes quickly and efficiently. It is the perfect and correct court to hear this case.
"The BOA knows that CAS can deal with this case within the time-frame, which would allow another selection process to be considered if required before 6 July. This is not a case against an athlete who has done anything wrong, unlike the majority of other BOA cases this year. This was all about a highly flawed and personal selection process.
"The BOA will almost certainly not allow such a flawed selection process from a governing body for Rio in 2016. They need to give Aaron Cook a chance to prove his case before CAS.
"The BOA may not agree with Aaron's case, but it has a legal and moral obligation to find an appropriate, fair and transparent resolution for Aaron. Aaron deserves nothing less.
"It is beyond belief that the BOA wants the British public to believe that the internationally renowned sports tribunal that deals with urgent disputes regarding the Olympics is not the right court to hear Aaron's urgent case. Nor is it objectively clear to Aaron or to anyone in his team why the world number one in his weight category and discipline has not already been selected for Team GB."