He was snapped up by the Seagulls in a £16m deal in the same summer Onana joined United and has three years left on his current contract.
A loan deal with a fee and an obligation to buy has also been floated but this will give little relief for new arrivals, leaving Amorim in a difficult position.
Current United No 1 Andre Onana is said to be unsettled with United sounding out replacements
Both Onana and understudy Altay Bayindir have been criticised after making glaring mistakes in recent weeks. United’s No 2 conceded directly from a corner during the Carabao Cup loss to Tottenham before Onana did the same a week later at Wolves.
It was reported earlier this week that United sent scouts to watch him in action.
But Ten Hag was sacked in October and replaced by Ruben Amorim, and the Daily Star have claimed Onana is unhappy with life in Manchester.
But Ruben Amorim’s efforts to overhaul his squad will be affected by United’s PSR problems
Verbruggen has become Brighton’s first-choice stopper, fending off competition from Jason Steele, and is also the No 1 for the Netherlands.
The same outlet have also reported that the 28-year-old was already unsettled before Ten Hag’s dismissal, but the situation has worsened since Amorim’s arrival. As a result, United are said to be sounding out replacements with Verbruggen a target.