Arsenal fans, take a deep breath—the referee for Tuesday's Champions League semi-final second leg against Atletico Madrid has been confirmed, and the omens are looking good for the Gunners.

UEFA have announced that German official Daniel Siebert will take charge of the crucial clash at the Emirates Stadium. He'll be supported by an all-German team: assistant referees Jan Seidel and Rafael Foltyn, with Tobias Stieler as fourth official. On VAR duty, Bastian Dankert will be joined by assistant VAR Robert Schroder.

For Arsenal supporters, Siebert's track record makes for encouraging reading. The 40-year-old has refereed the Gunners on three previous occasions, and they've won every single time—a 3-1 Europa League victory over Olympiacos, a dominant 3-0 Champions League group stage win against GNK Dinamo, and a hard-fought 1-0 quarter-final triumph over Sporting CP back in April. Notably, he didn't brandish a single red card or point to the penalty spot in any of those matches.

On the flip side, Atletico Madrid have struggled under Siebert's watch. In three games officiated by the German, Diego Simeone's side have lost to Liverpool, drawn with Manchester City, and fallen to Tottenham Hotspur. Perhaps most tellingly, Siebert sent off Antoine Griezmann against Liverpool and awarded a penalty to Spurs in their 3-2 win—though that result ultimately came on aggregate defeat for the north London side.

After a controversial first leg that saw David Hancko escape a red card for a last-man foul and Eberechi Eze's penalty bizarrely overturned, Arsenal fans will simply be hoping for fair and consistent officiating this time around. With Siebert's history favoring the Gunners, there's every reason to feel optimistic heading into Tuesday's showdown.