By Justin Palmer LONDON, Oct 15 (Reuters) – Juergen Klopp’s first game in charge of Liverpool will dominate the headlines as the Premier League resumes after the international break but Sam Allardyce has the toughest task as he takes the reins at Sunderland. Former Borussia Dortmund boss Klopp kicks off his reign at the former English champions, who fired Brendan Rodgers on Oct. 4, with a trip to the capital to play Tottenham Hotspur in the Saturday lunchtime kickoff (1145