Bayern Munich coach Thomas Tuchel on Friday urged his players to salvage a “frustrating and unsatisfactory” season by their standard by reaching the Champions League final. Bayern face a first season without silverware in a dozen years, long eliminated in the German Cup by third division Saarbrücken, and a 12th straight Bundesliga title all but out of reach 13 points behind unbeaten leaders Bayer Leverkusen. In only real hope is the Champions League where they play English title contenders Arsenal on Tuesday and the week after in the quarter-finals. If they win, title holders Manchester City o…