The Shrimpers announced on Friday that they had agreed for the 25-year-old defensive midfielder to travel to Yorkshire for talks.
“Following further discussions between Southend United, Sheffield United and Ryan Leonard this week terms have now been agreed to enable Ryan to fulfil his wish to join the Blades,” a statement read.
“Ryan Leonard will be undergoing a medical later today and subject to agreeing personal terms Ryan will be in a position to fulfil his dream move over the next week.”
Leonard has made 246 appearances for Southend since joining from Plymouth in 2011.
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