Second year head coach Brad Stevens will quickly learn how difficult it is to put together an NBA roster. With opening night two weeks away Stevens and Celtic GM Danny Ainge have to put together the pieces of a very complicated puzzle. With only two off season signings the Celtic opening night roster looks like a scrap heap of veterans and young players. Last year Stevens and the Celtics finished up at 25-57. Newly signed guard /forward Evan Turner from Philadelphia should bring spark and depth to the team. Veteran guard Avery Bradley signed a four year deal but gets criticized constantly for ineffective shooting.On draft night Ainge drafted two outstanding players in guards Marcus Smart Oaklahoma and James Young Kentucky. Both will be tested early in hopes of helping the Celtics achieve more victories than last season .Up front the Celtics are bigger this year than last year. Kelly Olynyk and Jared Sullinger are more experienced. On draft night Ainge pulled off a trade with Cleveland that bought guard Marcus Thornton to Boston. Recently Ainge made another trade with with Cleveland that bought forward Dwight Powell a wide body to Boston. Also the Celtics snagged forward Eric Murphy for bench help. Veteran forward Gerald Wallace emerged as the teams leader both on the court and in the clubhouse. Also veterans Jeff Green showed flashes of promise last year but was inconsistent. Brandon Bass is pushing for a starting job had a solid season and is also a team leader.Center wise Tyler Zeller was another player Ainge got on draft night from The Caviliers. Zeller brings size and depth to the middle. Other than that Stevens does not have much to work with. Veteran Rjon Rondo broke his finger and is out six to eight weeks. Free agents Tim Frazier, Rodney McGruder, center Joel Anthony and Christian Whatley fight it out for garbage time.