Lichtsteiner, out of contract in June, has won six successive Serie A titles since arriving from Lazio in 2011 and the 34-year-old is on the cusp of a seventh following Saturday's 3-1 victory over Bologna.
After Juventus moved seven points clear of Scudetto rivals Napoli, who are due to play Torino Sunday, Lichtsteiner told reporters: "These are my last 14 days at Juventus. I need new challenges and motivation.
"I have improved in my mentality. I didn't know what it meant to play at Juventus when I arrived, as there is pressure and obsession for the victory," Lichtsteiner – who could add a fifth Coppa Italia crown to his collection when Juve face AC Milan in the final – said in an interview with Sky Sport Italia post-match.
"At Lazio we had to defend in the final third, here in midfield. My future will be outside of Italy. I won't say where yet, as I haven't signed."
Goal reported back in January that Lichtsteiner had been in talks with Valencia but that negotiations with the La Liga side had stalled.
He moved to Serie A to join Lazio following a strong showing at Euro 2008.