Haigh had previously pleaded not guilty to cyber slander after he was accused of sending an offensive tweet about a business partner, BBC reported.
The Yorkshire-born solicitor and businessman was arrested in Dubai on May 18, 2014 when he was detained without charge for 14 months and had his worldwide assets frozen.
In August 2015, he was convicted of misappropriating items of monetary value from a position of trust from his former Dubai-based employer and sentenced to two years in prison - the majority of which he had already served.
The latest complaint against Haigh was from his former employer, investment bank Gulf Finance House (GFH), and referred to remarks made on Twitter.
His spokesman said he was delighted to see the end of a "22-month nightmare". He expected Haigh to return to Britain in two to three days.
Haigh has denied all allegations and argued that he could not have committed the alleged Twitter offence while in jail.