A nine-year-old boy with a respiratory condition will fulfil a lifelong dream when he leads United out as a mascot this weekend.
Addison Connor, a Morley Place Junior School pupil, was born with a diaphragmatic hernia which had stopped one of his lungs from developing properly.
The hernia caused his stomach organs to move up into his chest, through an opening in the muscles which allows us to breathe, and he underwent several emergency procedures to treat the condition.
Now, Addison lives life like any other child his age but with the help of an oxygen cylinder to aid his breathing.
Addison, of Conisbrough, is a huge Blades fan and he has now been invited by the Club to lead the team out as a mascot for the FA Cup clash this weekend versus Plymouth Argyle.
Addison's father, Craig, said: "Addison has supported Sheffield United all his life, and we have been to many games, including last year's FA Cup semi-final at Wembley. He has always wanted to be a mascot for the Blades, and this all started when he saw mascots on TV and he said to me that he would love to do that one day.
"His aunty, Kim, wrote to Sheffield United and the after a positive response we couldn't wait to tell Addison the news that he would be a mascot this weekend. His eyes lit up when we told him the news and he hasn't stopped telling everyone since."
As well as leading the team out, Addison will be given a VIP tour of the backroom facilities, meet first team players and manager Nigel Clough, receive an autographed football, which will be presented by Club captain Michael Doyle, and have a kick about on the Bramall Lane pitch before kick-off.
Dave McCarthy, Operations Director at Sheffield United, said: ''After speaking to Addison's aunt, Kim, it quickly became clear that Addison is an extremely brave young boy who also acts as an inspiration to others as he has remained positive throughout all of his health issues.
"Everyone at the Club is honoured that he will be leading the team out against Plymouth Argyle and we hope he enjoys his day with us."
Many of Addison's family will be there to watch him lead the team out onto the pitch, including his father, mother, brothers, grandparents and his aunties and uncles.
Craig added: "It will be such a special day for our family. Addison has been through so much but he is always happy and smiling. He deals with everything so well.
"We'd like to say a very big thank you to Sheffield United. They have made one of Addison's dreams come true."