The 23-year-old winger had only just signed for Boston United from Stamford and hasn't even played for the Pilgrims and he has jumped at the opportunity to show off his talents at a highly regarded Championship club - Sheffield United.Joint-manager at Boston Utd Rob Scott said: "You can't deny him that opportunity but we'll get him in over the next few games and see where he is."
Kirk joins Glen Little and Julian Gray as a trialist at S2.