WWE currently has a higher level of interest in AJ Styles than they have in quite some time, according to the latest Wrestling Observer Newsletter.
Styles, 38, is the reigning IWGP Heavyweight Champion and has been doing ‘phenomenally’ for himself working independently since leaving TNA.  It’s not to say that there’s even a high level of interest in Styles, but the recent evolution of NXT in particular has led to WWE officials giving him another look.
Triple H has been vocal about his plans to take NXT on the road more aggressively in 2016 and turn it into a full-fledged 3rd touring brand. With the talent that has been rising to the top of NXT over the last year, Styles would fit in very well with the promotion, which features an athletic in-ring style while still allowing the performers to work more-protected matches than they have elsewhere.
The main hurdle with Styles is that he’s making a lot of money working for NJPW, ROH and other promotions and would command much more money than the typical NXT star. Styles has a lot of control over his schedule and going back on the road on a more consistent basis might require more financial incentive than WWE is willing to offer.