Giannis Antetokounmpo is one of the NBA's most unsuspecting rising stars, making a name for himself as the Milwaukee Bucks' franchise player.

He came into the league as a high-potential foreign player who unquestionably had a high ceiling. The question, of course, was whether he'd be able to reach it and how long that might take. Just 22 years old now with four years of NBA experience, it's clear he's already proving he's the real deal.

Antetokounmpo is coming off a career year, averaging 22.9 points, 8.8 rebounds, 5.4 assists, 1.9 blocks and 1.6 rebounds per game. He's racking up stats while representing Nike as his footwear and apparel brand, but that could be changing soon and could cost another one of the NBA's brightest players some serious money.

Despite Giannis being a dominant force on the court, Nike is paying him a mere $25,000 per yer for his endorsement. He initially signed a low-end deal with Nike as an unproven player taken with the 15th pick in the 2013 NBA Draft, but that contract ends in September, according to Nick DePaula of ESPN.

Giannis and his representatives are looking at the $5 million per year deal with Adidas another young, up-and-coming international player in Kristaps Porzingis signed last summer as a starting point in negotiations. Thus far both Under Armour and Adidas have expressed interest in adding Antetokounmpo into their team, while Nike can match any offer sheets he signs. 

Antetokounmpo being the hottest shoe and brand free agent has potentially created a big problem for Andrew Wiggins' future with Adidas, though. The brand has been "hesitant" about creating a signature shoe for Wiggins, who was brought on to be the company's ambassador as one of the most-hyped No. 1 picks in years. 

Part of the reason they aren't jumping on pushing Wiggins to the forefront of their shoe line is the potential of making Antetokounmpo one of their marquee talents, according to DePaula. Adidas views Giannis as a more-established and respected talent, and could make a huge offer that he can't refuse and Nike may be uninterested in matching. 

Considering Antetokounmpo will be seeking a pay increase from what's a bargain-of-a-contract for Nike at this point, it will be interesting to see how this plays out. It's fairly telling that Adidas is more keen on the idea of Giannis as one of the faces of their company, but he's proven quickly that he has the makings of becoming a transcendent talent.