Ipswich manager McCarthy - who is from Barnsley and began his playing career with the Reds - is 5/1 to succeed Paul Heckingbottom at Oakwell [Sky Bet].
And while the 59-year-old is still behind Danny Cowley, Simon Grayson, Paul Harsley and Garry Monk in the betting, many Ipswich followers hope there is indeed substance to the speculation - despite McCarthy having led their side to a top-half finish on three occasions with a limited budget.
Surely mick McCarthy would be a perfect appointment for @BarnsleyFC! Who do we need to speak to so it can happen— Ryan Martin (@rjmartinITFC) 6 February 2018
Mick now 12/1 from 33/1 this afternoon to become next Barnsley Manager, odds shortening & hearing a lot of chatter linking him with a potential move. Could be a good move for everyone involved #itfc— Ipswich_Steve (@Ipswich_Steve) 6 February 2018
McCarthy to Barnsley please. Lively— Haz (@Harry_Ems98) 6 February 2018
Just saw something on me timeline saying McCarthy odds for Barnsley job. Local boy, loves the club, reunited with Kieffer Moore. Im mean the postives outweighs the negatives. Go and ruin that club— David Dalton (@DaveD92) 7 February 2018
What would be really nice is if Mick McCarthy Goes to Barnsley and then we go in for Danny Cowley at the end of the season after his success but that’s wishful thinking #itfc— Curtis Yates (@CurtisYxtes) 7 February 2018
And the dream of mick McCarthy at Barnsley— Oscar Stanley (@_XhakaLacaBoom_) 7 February 2018
Given the replies to Barnsley's tweet to McCarthy on his birthday on Wednesday, however, Ipswich fans' trash would be Tykes fans' treasure...
We have got work to do Mick. Come and be the hero again— Nick Wilson MBE (@Nickwilson22) 7 February 2018
Bring him home— Adam Parkin (@bfcadam1912) 7 February 2018
Nothing like buttering up the new gaffer. #BringMickHome— mattygoodwin (@mattygoodwin) 7 February 2018
McCarthy, who has also managed Sunderland and Wolverhampton Wanderers to the Premier League, is out of contract at Portman Road in May.
Speaking to the Eastern Daily Press last year, the Yorkshire-Irishman hinted he could walk away from Town at that point, after five-and-a-half years at the helm.
Could McCarthy quit Ipswich to become Barnsley's next manager?