Turkish President Recep Tayyip Erdogan will abandon his aggressive policy if European countries demonstrate unity, Euractiv reported, citing a source in Brussels.
According to the source, the Turkish leader is testing the limits of his power using Moscow's tactics.
Last Friday, there was a meeting with Erdogan's adviser Ibrahim Kalin, while on Saturday Erdogan said that Turkey belongs to Europe.
EU leaders are to meet at a summit on December 10-11, which will consider the issue of imposing sanctions on Turkey.
However, a number of EU countries, including Germany, Italy, Spain, and Hungary, have previously stated their preference for dialogue with Turkey over sanctions. Euractiv said that Bulgaria has not taken any position, but its PM Boyko Borisov is mainly seen as Erdogan's man in the EU.