Erling Haaland is a Nike boy no more after his deal with the American sportswear giants officially ended this month.

To all but confirm the news of the break up, Haaland recently posted pictures of him at training sessions with Dortmund while wearing an adidas shirt – adding a new element to the proposed PUMA deal that was mooted in rumours last month.

With PUMA firmly in the running for his signature and ready to drop €8 million-per-season to secure his services, Haaland donning an adidas-branded product could be a move that increases the pressure on PUMA to secure the deal – or, alternatively, indicate that he could be holding out for another manufacturer to swoop in and secure sponsorship with him.

BVB have reportedly been set to offer Haaland €16 million-a-year as part of a bumper new deal next month that would double his current wages which would align himself with PUMA even further.

However, with his options firmly open to move to other clubs this year, the brand wars to sign Haaland could be set to hot up alongside the impending transfer saga.

While Real Madrid and Manchester City the two front-runners for his signature, a brand power battle between adidas and PUMA – the two clubs' respective sponsors – could be rumbling on in the background for Haaland's signature.

Keep it locked to VERSUS for more information on the potential move as it breaks.