Torbjörn Törnqvist, the Swedish billionaire who took control of the world’s fourth-largest oil trader last week buying out his Russian co-founder, may soon look for a new partner, Bloomberg said. He says the ownership is too concentrated.

“The company would benefit from a somewhat more diversified shareholding structure,” Tornqvist, 60,told the news bureau. His first priority is attending to client concerns because last week’s deal “is obviously something that needs to be digested” by them.

A move by Torbjorn Tornqvist to sell shares in commodity trading company Gunvor Group — linked by the U.S. government to Russian President Vladimir Putin — would open doors to a new round of deal-making in global commodities trading, Bloomberg said.

The company, which was founded in 2000, is the fourth largest crude oil trader in the world after Glencore, Vitol, and Trafigura^. The company was co-founded and controlled by Gennady Timchenko together with Torbjörn Törnqvist; however, due to the United States sanctions Timchenko sold its stake in the company to Törnqvist.