Cavs' Kyrie Irving unwilling to commit long-term to any team trading for him

Kyrie Irving asked the Cavaliers to trade him but he is not prepared to commit to any team beyond his free agency in 2019.

Per Cleveland.com (via RealGM), The Phoenix Suns are a team that would be interested in trading for Irving but would like to know if he'd be willing to sign an extension. The Suns would be willing to trade Eric Bledsoe for Irving even without a commitment.
Irving is due $18.87 million in 17-18, $20.10 in 18-19 and $21.33 million in 19-20 (player option)