Ablett gets thumbs up for clash with Blades.
The central defender was an ever-present in the Blues line-up this season until flu sidelined him for Tuesday's win at Crewe Alexandra.
However, he trained yesterday and manager Trevor Francis said: "He's not 100 per cent just yet but we're expecting him to be OK for Sunday."
Meanwhile, Andy Legg has followed his Welsh international colleague and former club-mate, Jason Bowen, by joining Reading in a move worth pounds 75,000.
Legg, who once boasted the longest throw in football, agreed terms with the First Division club yesterday .
The winger, who rejected the chance to join Ipswich Town earlier this season, is out of contract in June and opted to fix himself up with a club now rather than take his chances in the inevitable scramble that will follow the implementation of the BosmanRuling in June.
A winger definitely on the move is Wolves' Jermaine Wright. Wright, who was signed by Graham Taylor from Millwall for pounds 50,000 in 1995, has joined Crewe Alexandra for half that figure.
Wolves, however, could recoup the outlay as another pounds 25,000 will become payable if the 22-year-old makes an undisclosed number of appearances for the Cheshire club.
Coventry City manager Gordon Strachan faces a selection poser in naming a side that could equal the club's best-ever winning sequence when they entertain Barnsley tomorrow.
Centre-back Richard Shaw has recovered from the groin injury that ruled him out of Wednesday's win at Southampton.
And that means Strachan having to decide whether to recall him or stick with Dion Dublin in defence. If he does go for the former option the chances are record signing Viorel Moldovan returning to the bench after making his full debut at The Dell.
Victory against Barnsley will be the Sky Blues' sixth in a row, equalling the run they put together in 1987 the year they won the FA Cup.
Sheffield Wednesday have had a new offer accepted by Hajduk Split for Macedonian centre-half Goce Sedloski.
The Owls will pay pounds 750,000, followed by stage payments up to pounds 1million, depending upon appearances. Split will receive pounds 250,000 every time the player completes a batch of 25 games.
Ron Atkinson's club were due to sign Sedloski in a pounds 1.75million deal in December but it was put on ice after the player failed an initial medical. He has since had new tests, and Atkinson was keen to keep the transfer alive.