 Things did not improve at his new team where he only played five times all competitions comprised, also getting sent off in a 0–3 league home loss to Atlético Madrid; on 31 January 2007, he cancelled his contract by mutual consent.César joined Bolton Wanderers on a short-term contract until the end of the season, in February 2007.He made his Premier League debut as an injury-time substitute for Nicolas Anelka on 28 April, in a 2–2 draw against Chelsea; on 18 May, after failing to feature in any more matches, it was revealed that he would leave the club after the new manager Sammy Lee decided not to extend his contract, and he subsequently returned to his homeland, signing with Hércules CF in Segunda División.