Holt is an ex colleague of the former Rangers striker, as well as current Ibrox manager Graeme Murty.
Ex-Rangers attacker Steven Naismith could be set to return to Ibrox, with Hearts.
Naismith, who spent five successful seasons at Rangers, returns to Ibrox to face Graeme Murty's side on Saturday.
Rangers were linked with a move to bring Steven Naismith back to Ibrox in January.
The Edinburgh club confirmed they are in search of a new midfielder and striker before the transfer window closes.
Ex-Glasgow Rangers boss Alex McLeish would have loved to see Steven Naismith go back to Ibrox.
Graeme Murty’s Glasgow Rangers were linked with bringing Steven Naismith to Ibrox.
Graeme Murty’s Glasgow Rangers have brought Jason Cummings to Ibrox on loan from Nottingham Forest and did not sign Steven Naismith.
Glasgow Rangers manager Graeme Murty spoke to former Ibrox star Steven Naismith before his loan move from Norwich City to Heart of Midlothian.
The former Scotland captain could not believe Glasgow Rangers' decision to allow Naismith to join Hearts.
The Norwich City forward would fit the Garry Monk profile perfectly.
The former Rangers star is being linked with an Ibrox return this summer, but is a controversial figure at the Glasgow club.
It has been a season of disappointment for Norwich City and one that their fans will be keen to forget, as a result a squad overhaul could be on the cards.