Sunderland has formalised its interest in Wolverhampton Wanderers striker
Press Association Sport understands the Black Cats have made a formal offer for the 25-year-old Scotland international after months of speculation over his future.
Fletcher, who has two years remaining on his contract at Molineux, is understood to be among manager
However, relegated Wolves reportedly values the player at around £10 million ($15.03 million), and it remains to be seen whether or not Sunderland's bid comes close to persuading it to sell.
Former Hibernian frontman Fletcher joined the Black Country club from Burnley two summers ago, and although he personally has performed creditably in the Premier League, has been relegated twice during his time in the English top flight.
O'Neill has, to date, made only one signing since the end of last season after completing a move for free agent
At the same time, a procession of players have headed out of the Stadium of Light, many of them from the fringes of the senior squad, but including the likes of Gyan, Scotland goalkeeper
The Ulsterman revealed last week that the club was monitoring several situations and that he hoped to make a breakthrough soon.
English Premier League
Michael Laudrup has urged his Swansea side to remain motivated and claim a victory against Fulham which could see it finish best of the rest in the Barclays Premier League.