In the summer of 2013, Lazăr signed a contract for three years with FC Dinamo București.
He scored and assisted against big rival Steaua in the Romanian cup.
On 20 July Lazăr became the new captain after Laurențiu Rus was released from Dinamo.
In a match against Universitatea Cluj, Lazăr scored a goal to put Dinamo 2-1 ahead and assisted for 3–1.
After four months, the technical director of Dinamo București announced that he was called back from his loan.