 On 24 July 2008, Niculae signed a four-year contract with his former club Dinamo Bucureşti.Due to his lack of fitness, Niculae played his first match for Dinamo since his return on 10 August, coming in as a substitute for Gabriel Boștină in a 3–2 win against CS Otopeni, netting the winning goal in the 85th minute.On 30 August, he scored against Universitatea Craiova, securing his team a 1–0 win.