Gloucester escape threat to place in European Challenge Cup final

• Europe row over Mariano Galarza registration is resolved• Toulon and Queensland Reds in Quade Cooper wrangle• Gloucester’s positive thinking rewarded against ExeterGloucester’s place in next week’s European Challenge Cup final against Edinburgh is not under threat even though they have been charged with playing the Argentina second-row Mariano Galarza against Sale in the Premiership last month when he was not properly registered with the club.Under the rules for Europe, if a player appears in one of the two tournaments while his club registration breaches regulations he is deemed ineligible.…