Thomson
Flowers grow in front of Swiss agrochemicals maker Syngenta's logo at the company's headquarters in Basel
China National Chemical, better known as ChemChina, offered about 449 Swiss francs per share for Syngenta, valuing the Basel, Switzerland-based company at about 41.7 billion Swiss francs ($41.72 billion), according to the report.
The offer follows a similarly priced bid from Monsanto that was withdrawn after Syngenta dismissed it as too low.
Company representatives said at the time that regulatory hurdles were a concern in that deal as well. Syngenta's board cited concerns that if it combined with Monsanto, the two companies would control nearly half the seeds market in the US.
Monsanto, eager to appease those concerns, added a $2 billion reverse breakup fee that it would pay Syngenta if the deal failed the antitrust sniff test.
ChemChina and Syngenta are still in talks and an agreement could still be reached in the next few weeks, Bloomberg said, citing sources.
Syngenta's chief executive Mike Mack stepped down from the company last month.
Syngenta is also talking to other potential suitors, the news agency said.
U.S.-listed shares of Syngenta were up 14 percent at $79.22 in extended trading on Thursday.
Syngenta and ChemChina could not immediately be reached for comments.
(Reuters editing by Anil D'Silva)