Everton have made Thomas Tuchel their No.1 target after axing boss Ronald Koeman. According to Mirror, the search for a new manager began immediately, with highly-regarded German Tuchel - who is available after leaving Borussia Dortmund following a fall-out with club bosses last summer - top of the list of potential candidates. Contact has already been made with the 44-year-old’s representatives, but Tuchel will not rush into a decision — especially with Bayern Munich still a potential destination at the end of this season. Everton Under-23s coach David Unsworth has been asked to take temporary charge for the Carabao Cup visit to Chelsea on Wednesday night, along with his assistant John Ebbrell, another long-serving Everton favourite. Unsworth could remain at the helm at least until the international break in two weeks'' time. By then, the board hope to have ticked off a short-list of candidates, with Tuchel at the top if he shows any interest in coming to Goodison. He lifted the German Cup with Dortmund last season and took them to the Champions League quarter-finals.