Former U.S. national team coach Bruce Arena makes his MLS debut tomorrow night as New York Red Bulls coach against D.C. United, the club he guided to two successive MLS Cup titles in 1996-97. Regardless of how the Red Bulls perform from here on in, it’s important for the team and the league that they’ve been able to retain the country’s most successful coach. “In a league that needs more buzz, Arena will no doubt provide plenty,” SI.com says, “filling reporters’ notebooks with his Long Island wiseguy routine as he tackles what may be the biggest challenge of his career: making the Red Bulls matter in the Big Apple.” The New York-area team has been by far the most disappointing franchise in the league’s short 10-year history, in what is by far the country’s biggest sports market. After the Bulls’ 4-1 loss to FC Barcelona in Arena’s coaching debut last Friday, SI was a granted an audience with the vocal man. For starters, he was very candid about how poorly he thought his departure as national team coach was handled by the U.S. Soccer Federation. “Do you think I want to show them something?” Arena says. “What am I going to show them? I’ve probably showed them the finest eight years of the national team they’re going to see for a long time. I don’t need to prove anything to them.” Arena said his falling out with U.S. Soccer played a part in his decision to return to MLS. He was also vocal about things the league to do to turn around. For one thing, he says, salary caps and the whole idea that there should be “parity” among teams gets away from what professional sports is all about. He said he hopes to bring organization and most importantly, results, to a Red Bulls team that has already started improving in the last few months.