REUTERS At the trilateral negotiations on gas transit, scheduled for late May, Ukraine, together with the European Union, will offer Gazprom an option where the Russian side books for a long period of time a 60 bcm per year capacity of the Ukrainian gas transmission system, that&#39;s according to Yuriy Vitrenko, Naftogaz CCO. "The position is as follows: Gazprom should book for a long period, approximately 10 years, 60 billion cubic meters per year on average... At the same time, Ukraine will provide capacity at 90 billion cubic meters per year. 30 bcm will be free capacity, which will be available for booking by other companies," said Vitrenko. Read alsoRussia may set up another gas crisis – Naftogaz CEO He noted that, according to preliminary calculations, such an agreement would allow Ukraine to retain revenues from transit at $3 billion. As UNIAN reported earlier, on April 24, Vice-President of the European Commission, Maroš Sefcovic, said that the next round of talks in the trilateral format involving Ukraine, Russia, and the European Commission on the transit of Russian gas through Ukraine after 2019 could take place in the coming weeks. Tripartite negotiations on gas transit after 2019 were held in Brussels on January 21. Read alsoEuropean Commission seeks to hold gas talks with Ukraine, Russia in coming weeks On January 15, preliminary technical tripartite consultations with the participation of Ukraine, Russia and the European Commission on the future transit of gas through Ukraine were to be held, but representatives of Gazprom disrupted the meeting.