Tesla's founder Elon Musk inks a deal to purchase Twitter with $44 billion in cash. Photo: website

Short-seller Hindenburg Research warned on Monday that Elon Musk's $44-billion offer to take Twitter Inc private could get repriced lower if the world's richest person walked away from the deal.

"Musk holds all the cards here. If Elon Musk's bid for Twitter disappeared tomorrow, Twitter's equity would fall by 50 percent from current levels. Consequently, we see a significant risk that the deal gets repriced lower," Hindenburg, which has a short position on Twitter, said in a report. 

Shares of the social media platform were down as much as 4 percent amid a broader market decline and touched $47.76, their lowest level since Musk made his $54.20 per share offer in April, calling it "best and final."

Hindenburg said the deal has seen a number of developments, from financing to board approval, which could have weakened Twitter's position.

"We are supportive of Musk's efforts to take Twitter private and see a significant chance the deal will close at a lower price," Hindenburg said.

The short-seller said Tesla Inc chief executive could walk away paying the $1 billion breakup fee and has an incredible leverage to renegotiate if he chooses to.

Last month, Twitter secured a $44-billion cash deal to sell itself to Musk, who received over $7 billion in funding from high-profile investors, including Oracle's co-founder Larry Ellison and Sequoia Capital. 

Angelo Zino, analyst at CFRA Research, said there is a high probability that the deal would close at the stated offer price, except if Musk has a change of heart.