As he was released two months before the end of the jail term to see his family, he escaped and went to fight in the Syrian war.
At the same time, Turkish prosecutors have reopened a case against Celik related to his role in the death of Russian servicemen in Syria after new evidence has surfaced.
Celik is now suspected of destroying one of two Mi-8 helicopters that were taking part in the search and rescue operation for the pilots of the downed Russian Su-24. A Russian Marine was killed in the incident.
On Monday Vladimir Putin received a letter from his Turkish counterpart Recep Tayyip Erdoğan expressing readiness to resolve bilateral crisis caused by the downing of a Russian combat plane by the Turkish fighter jet last year.