Reed has spent eight years at Southampton, two fewer than Thelwell at Wolverhampton Wanderers.
Wolverhampton Wanderers boss Paul Lambert is reportedly considering his future at Molineux.
It has been a tough start to the season for Wolves with their recent form in particular a worrying sight.
Mendes was involved in a number of Wolverhampton Wanderers' summer dealings.
Wolverhampton Wanderers are looking to replace Walter Zenga, who was sacked last week.
Wolves haven't exactly made the start expected of a side hoping to push for promotion this season, with the club's takeover proving "chaotic."
Wolverhampton Wanderers have signed five current and former Eagles players so far.
Wolverhampton Wanderers tried to sign Francois Moubandje from Toulouse.