U.S. private equity investor KKR has won acceptances to buy 27.8% of shares in Springer, in a deal backed by the publisher's main shareholders. The transaction is subject to approval and is only expected to close towards the end of the year.

Asked whether he was in the market for acquisitions, Doepfner said he was on a constant lookout. With KKR on board, Springer can contemplate larger deals but would not allow its valuation discipline to slip, he added.

He said, however, that Springer had "no concrete thoughts" concerning Scout24 European autos portal or eBay's German classifieds assets that include the top autos marketplace mobile.de.

(Reporting by Douglas Busvine; Editing by Michelle Martin)