Owen can revoke the offer to sell his motorcycle to Julian: As long as Julian has not yet accepted the offer.
Based on the given scenario Owen can revoke the offer to sell the motorcycle to Julian based on the fact that Julian has not accepted the offer to buy the motorcycle from Owen.
An individual who makes an offer have the power to revoke so long as it hasn't yet been accepted by the other party.
Hence, having a second thought about the offer Owen can revoke the original offer he made.
Inconclusion Owen can revoke the offer to sell his motorcycle to Julian: As long as Julian has not yet accepted the offer.
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