Sunderland chairman Stewart Donald says they will sign a striker this month - but denied that Will Grigg has had a medical.
Northern Ireland international frontman Grigg has been linked with a loan move to the Stadium of Light after falling down the pecking order at Wigan Athletic.
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Donald revealed on Monday that he has held talks with a striker over a possible move to Wearside, with Sunderland unsure of Josh Maja's future.
However, when asked on Twitter if Grigg had been having a medical at Sunderland, he replied: "Nope.
"We are working hard in January but we have work to do yet to get the players we want and I am sure we will be linked with almost everyone so will just wink all the way thru January.
"But we will sign a striker - probably."
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Sunderland have been linked with a number of strikers, including Ayr United frontman Lawrence Shankland and out of contract Jai Quitongo.
They are also looking to bolster their defensive ranks, with a loan move for Burnley centre-half Jimmy Dunne expected to be finalised in the next 48 hours.