London : French drug maker Sanofi (SASY.PA) is looking to hire advisers for the sale of its European generic drug business by the end of the month, sources told Reuters, ahead of an auction process which is set to start after the summer.

A handful of banks have been shortlisted to present their final pitches for the long-awaited deal which could be worth more than 2 billion euros ($2.1 billion), the sources said.

Bankers have been vying for a mandate for the past 18 months since Sanofi boss Olivier Brandicourt took charge of the French firm and decided to put the business under review.

A final decision on the advisory line up, which could see a boutique bank working hand in hand with a larger player, is expected in around two weeks, the sources said.

A spokesman at Sanofi declined to comment.

France's largest drug maker, which recently worked with Lazard to finalize a $20 billion asset swap deal with German firm Boehringer for Sanofi's Merial animal health arm, said in January it was expecting to complete the sale of the European generics business by the end of 2018.

The company started the legal work needed to disentangle the European generics business from its global operations toward the end of last year, the sources said, after announcing its plans to sell the unit in October.

Financial advisers will need to bring potential bidders to the negotiating table and conduct a formal auction process.

Sanofi, which recently failed to buy Swiss biotech firm Actelion and U.S. drug maker Medivation, wants to hold on to its global generics business including in emerging markets where it is looking to further develop its operations.

Its exit from the European generics market, where it made about 1 billion euros in sales in 2015, has already drawn interest from heavyweight buyout funds keen to invest in healthcare assets due to their high growth prospects and resilience in the event of a downturn.

Private equity firms Advent, Cinven [CINV.UL] and Permira are currently vying for Germany's Stada Arzneimittel (STAGn.DE), another generic drugs firm, which has been valued at more than 3.5 billion euros.

Sources said Sanofi would offer another good chance to invest in generic drugs for those who miss out on Stada.

Other private equity firms such as CVC Capital Partners [CVC.UL] and PAI Partners have recently clinched deals in the sector where they bought Italy's Doc Generici and France's Ethypharm, respectively.

Large industry players like Teva Pharmaceutical (TEVA.TA) have already gained enough scale in the generic drugs sector and are unlikely to make an offer for Sanofi's unit, the sources said, pointing to Teva's $40.5 billion purchase of Allergan's generics business which was completed last year.