The 25-year-old joined PSV from AZ Alkmaar in 2010, when he was also selected for the Dutch national team.
Now Lens is set for a move to Ukraine with the deal appearing to be imminent subject to the player's approval.
He told Voetbal International: "I'm leaving today (Monday) or else tomorrow to Kiev, subject to a personal agreement.
"My agent is negotiating. It looks good, but I will only go if we have an agreement.
"If I like what I see, it can go fast. I do not exclude that we finish it immediately."