Luke Harper has seized an opportunity to take a dig at WWE over its NXT merchandise.

The star returned to TV last Sunday following a hiatus that began in April, helping Erick Rowan win his No Disqualification match against Roman Reign at Clash of Champions.

It was reported that Vince McMahon did not want Harper in the ring after he tried to leave WWE earlier this year but he's left Dave Meltzer with a bit of egg on his face with a shock appearance.

There's no telling where Luke's headed as he's contracted to WWE until April 2020, and could either decide to extend or move on - it's still looking like the latter - but he is clearly dissatisfied with the exposure he's been afforded by the company.

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With NXT having debuted on USA Network on Wednesday, the promotion released an image on social media revealing that new t-shirt designs had been made for every wrestler signed to the brand. Harper wasn't best pleased with the display and threw some shade via Instagram.

“Larry, In over 7 years with @wwe I’ve never had a single Luke Harper tshirt but now all 155 NXT wrestlers each get their own. Got it," he posted. "Good luck tonight 8e/7c LIVE on USA!!!!! @erickredbeard @wweshop”

Harper does make a great point. He's been with WWE this long but has never had any merch bearing his name, even after having solo runs and winning the Intercontinental Championship. One can certainly understand his frustrations; if there's a special reason for WWE not having "Luke Harper" merch, we don't know what it is.

Would "Luke Harper" Shirts Sell?

To be fair, though, it would be pretty difficult to come up with a design for Harper. What would it be exactly? A worn-out tank top?

Of course, Luke deserves to have his own merchandise after being around for as long as he's been and actually being liked by fans. But it just doesn't look like it's something that would be easy to do unless WWE changes his look.

NEXT: Wrestlers React To NXT's Live Debut On The USA Network