NEW DELHI : Indian cricket icon Sachin Tendulkar admitted on Friday that he is contemplating retirement and said he would reassess his future next month. In an interview to be broadcast on Indian television Friday, the 39-year-old said he would decide on a "series by series" basis as he acknowledged that the clock was running down on his record-breaking career. "I am 39 and I don't think I have plenty of cricket left in me."