Henderson was a target of Sheffield Wednesday last summer

Sheffield United are preparing to put in a bid for Watford's Darius Henderson, reports BBC Radio Sheffield.

The striker would be a direct replacement for Rob Hulse, who has now completed his �1.75 move to United's Championship rivals Derby.

But the Blades face stiff competition for Henderson, who is also attracting the interest of Championship rivals Birmingham City and Wolves.

The 25-year-old joined Watford in 2005 and scored 13 goals last season.

606: DEBATE Would Henderson be a good signing for the Blades?

Meanwhile Jamaican international forward Luton Shelton is on the verge of leaving Bramall Lane.

The Blades are understood to have accepted a bid from Valerenga and the Norwegian side are expected to complete a deal for the 22-year-old this week.

Shelton made 21 appearances for the United last term, scoring 4 goals, he signed from Helsingborgs in 2007.