Lee Wallace: The Hearts left-back has been on Rangers' radar for a number of years and would arguably already be at Ibrox had it not been for a series of long-term injuries.
Craig Conway: A free agent after turning down the offer of a new contract at Dundee United. Rangers failed in an attempt to land the winger last January in swap deal for stopper Andy Webster.
David Goodwillie: Scotland's Young Player of the Year has been linked with a move to Ibrox after two fine seasons at Tannadice. But it will take a bid of around £2m to persuade Dundee United to sell their star striker.
David Vaughan: Welsh midfielder is available on a free after leaving Blackpool. However, Rangers face stiff competition from Sunderland and Everton.
Alexei Eremenko: The classy Finn dazzled during a year-long loan at Kilmarnock and is available for s1m from Metalist Kharkiv. McCoist could face competition with Premier League clubs such as Bolton watching Eremenko.
Kyle Bartley: Looked the part last term after arriving on loan from Arsenal but the young defender's season was cut short when he picked up knee-ligament injury.