There had been uncertainty over GFH Capital's intentions for the Elland Road outfit, with some suggestions that they were looking to offload completely.
However, it appears that is not the case.
Instead, GFH is recruiting "strategic investors" to strengthen the club's financial position, which it believes is necessary if Leeds are to regain their former status as a Premier League heavyweight.
IIB's chief executive, Aabed Al-Zeera, will join the board of Leeds City Holdings Limited.
David Haigh, deputy chief executive of GFH Capital, said: "The introduction of IIB is in keeping with what have always been GFH Capital's aims for the successful, sustainable and long term ownership of Leeds United FC.
"We believe that a consortium of like-minded investors provides the best ownership model for a club which belongs among the elite of English football clubs and global sporting brands.
"It is our aim to provide the finance and the stability to enable the club to complete that journey as soon as possible."