CPPIB, which manages Canada's national pension fund, declined to comment on the article.
The Dutch government, which co-owns Urenco with the British government and German utilities RWE and E.ON , has now dropped its opposition to a sale of the firm, the Sunday Times also reported, citing sources close to the talks.
Cameco , a Canadian uranium producer, is also weighing an offer for Urenco, said the Sunday Times. Sources told Reuters in January that France's Areva and Japan's Toshiba Corp <6502.T> were considering bids for the company.
The newspaper said that Areva was holding talks with private equity firms including Apax and CVC, regarding a possible joint offer for Urenco, and that Morgan Stanley had been appointed to handle the sale, with a float also a possibility.
Analysts estimate that the Buckinghamshire, UK-based uranium enrichment firm is worth between 2.5 billion euros and 3.6 billion euros ($3.27 billion to $4.70 billion), but some of the sellers are hoping for as much as 12 billion euros.
Urenco and Areva were not immediately available for comment. ($1 = 0.7654 euros)
(Reporting by Sarah Young; Editing by Alison Birrane)