Rangers 'express interest' in signing England World Cup hopeful
The current Ibrox number one is also out of contract in the summer with the 40-year-old yet to decide whether he will continue playing.
Johnstone has made 33 appearances in the Championship for the Baggies this season and has three England caps to his name.
His most recent call-up to Gareth Southgate’s squad came a fortnight ago for the international friendlies against Switzerland and Ivory Coast but he was forced to withdraw due to illness, with his place taken by former Celtic stopper Fraser Forster.
However, he remains a contender for an England call-up for the World Cup in Qatar this November.
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