China's Bohai Leasing has reportedly upped its offer for Irish aircraft leasing firm Avolon Holdings.

The firm is now offering 2.6 billion U.S. dollars in the take-over.

The 32 US-dollar per share offer is one dollar higher than Bohai's earlier bid in July.

It is also 2-dollars a share higher than an offer from a rival unidentified bidder.

Avolon shares have jumped nearly 5-percent on the news.

Both companies have until September 7th to finalize a deal.