Sheffield United could be looking to strengthen their squad for a Championship campaign in the summer.

Peterborough United chairman Darragh MacAnthony has refused to quash rumours linking Sheffield United with Marcus Maddison.
The Blades have been rumoured to be interested in Maddison on social media website Twitter recently.
With Chris Wilder’s side looking set to be playing Championship football next term, Maddison is said to be on their wishlist.
And when asked whether Sheffield United were targeting Maddison, MacAnthony did not give much away.
If the Blades were to sign Maddison, they would likely need to be promoted this season.
Maddison has already attracted the attentions of a number of Championship clubs, during his time with Posh.
Maddison has been a key player for Peterborough this season, although he the 23-year-old is currently out injured.
The former Newcastle United man has contributed seven goals and claimed 13 assists in 33 League One appearances this term.

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