Wilkinson, who is recovering from a shoulder injury that led him to miss a pre-season fixture against Stade FranÃƒÂ§ais last week, will make himself available for the Top 14 club providing he is fit.
A Toulon statement said Wilkinson “will respect his contract and be available for the first game of the Top 14 against Bayonne on 13 August”.
The Rugby Football Union has an agreement with English clubs over player release, but has had to negotiate individually with French clubs.
Back row James Haskell was involved in another row between the two bodies when he was asked to be made available for Stade FranÃƒÂ§ais during EnglandÃ¢â‚¬â„¢s Six Nations campaign.
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BIOGRAPHY: Anthony Martial