Millwall are to turn to Blackpool keeper Matt Gilks if David Forde rejects a new contract extension and leaves in the summer.
Even though keeping Forde is the top priority, Gilks features heavily in the Lions' boss Holloway's transfer plans.
Forde confirmed after last weekend's man-of-the-match performance against AFC Bournemouth that he hopes to finalise an extension to his current deal, which expires next month, however, Forde has now gone on a post-season golfing holiday with team mates Alan Dunne and Richard Chaplow, leaving those hopes in doubt.
Gilks, a 31-year-old Scotland international, will also be available on a free transfer come July as his contract with the Tangerines comes to an end.
Speaking last week about his future, Gilks told reporters: "I'm going to go away and turn my phone off for a couple of weeks. I'll let my agent do all the talking and see what happens.
"Nobody at Blackpool has spoken to me about my future, but first of all I will give my body a rest and get a bit of sun on my back."
Gilks is Blackpool's captain and won the club's Player of the Year award this season.
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