According to ESPN FC's Andy Mitten, the Swede's swift recovery from the knee injury that ended his 2016-17 campaign has sped up the timeline for a new deal. He was previously not offered a new contract at the end of last season.
The 35-year-old joined United in the summer of 2016 and enjoyed a fine first season at Old Trafford, but it came to a premature end after he suffered a bad knee injury in the UEFA Europa League quarter-final against RSC Anderlecht.
When he wasn't offered a new deal, most fans and pundits assumed he would continue his rehabilitation and sign with a Major League Soccer team early in 2018. His rehab took place at United's AON Training Complex, however, fuelling rumours he could return to the Red Devils.
Manager Jose Mourinho and Ibrahimovic have always got along well, and the forward was a favourite of the tactician last season, so it shouldn't come as a surprise he's set to return now his injury concerns are nearly in the rearview mirror.
The club spent big on Romelu Lukaku during the summer, but the two powerful strikers could rotate, with United active in the UEFA Champions League as well as multiple domestic competitions.