Celtic are in the market for strikers ahead of the January window.
Brendan Rodgers has openly admitted that he is looking to sign two strikers in the upcoming window, with Leigh Griffiths taking time out from football while Odsonne Edouard suffered an injury against Motherwell on Wednesday night.
It leaves Rodgers with little options up front, after Celtic sold Moussa Dembele to French side Lyon on deadline day - giving themselves no time to bring in a replacement.
The likes of Scott Sinclair and Mikey Johnston can play up front, but Stubbs reckons Celtic need a striker like Chelsea's target man Giroud in the January window.
"It's a horrible window for a manager because you're getting a player no-one wants," Stubbs said. "They're not necessarily going to fit into your squad. You've got to do something to be seen as bringing players in.
"I think Celtic need a player along the lines of Olivier Giroud. He would cost a bit, especially wages wise, but we're talking about Celtic here."
The 87-time France international has started just five of his 14 Premier League appearances this season. Indeed, he has been forced to play back-up to Alvaro Morata, being used more often in the Europa League.
He has still managed to score five goals and create four more in 20 appearances. He is renowned for his aerial prowess, intelligence when it comes to positioning in the opposition box and a deft touch for a big man.
Giroud earns a huge £120,000 a week at Chelsea (Spotrac) and the likelihood Celtic convincing a player of his calibre to move to Scotland is unlikely. But his contract is set to expire at the end of the season, meaning he could be available next month.
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