When the Blades encountered Fradi last week in the European Tour, Fitos impressed Blackwell and has been rewarded with a trial at United. Blackwell's keen to give the midfielder a trial in tonight's game with Sheffield FC at the Bright Finance Stadium.
Kevin Blackwell said: "We are looking forward to seeing Laszlo in action, he has done well in training and stood out when we played against him in Hungary last week."
The relationship between the two clubs is increasing enormously after Fradi recently signed Ashmore and Abdi from the Blades. Meanwhile former Barnsley front man Istvan Ferenczi has joined up with Ferencvaros on a two year deal.