In the days leading up to the trade deadline last February the two men in charge of the Charlotte Bobcats’ roster each made a strong statement: President of Basketball Operations Rod Higgins: “We’re very active – our owner wants us to be active.’’ General manager Rich Cho: “We need more help rebounding...That’s something we will address whether through the trade deadline or through the draft.’’ It took a while but the Bobcats made good on those promises. The roster makeover has been significant and this clearly looks like a more competitive team than the one that bumbled its way to a 28-120 record the past two seasons. They drafted Indiana power forward Cody Zeller and signed free-agent center Al Jefferson. They re-signed shooting guard Gerald Henderson and power forward Josh McRoberts. In two lesser moves – but ones that fill needs new coach Steve Clifford identified – they’ve added veterans Jannero Pargo and Anthony Tolliver as third options at point guard and power forward respectively. Tolliver agreed to a one-year veteran-minimum deal Saturday. Once he formally signs the Bobcats will have 13 guarantees for next season with an NBA-maximum 15 roster spots available. The Bobcats also have power forward Jeff Adrien on an unguaranteed contract and have indicated they will work out guard Seth Curry the Charlottean and former Duke star who went undrafted in June.