United have completed the signing of Estonian international goalkeeper Mihkel Aksalu.

The 25-year-old, who has agreed a two-and-a-half year deal, joins from FC Flora Tallinn in his homeland for a nominal fee.

He has spent time with goalkeeping coach Andy Leaning during a number of trial spells at the Shirecliffe training facility over the past two months, and joins to add competition for the goalkeeper's jersey with Mark Bunn and Ian Bennett.

Kevin Blackwell says: "He has proved to be one of the best goalkeeping triallists we have seen for a long time.

"It is a terrific opportunity for him and if he continues his development he will become the number one Estonian goalkeeper. We are hoping he can fulfill his undoubted potential with Sheffield United and cement his international career."

The 6ft 4ins stopper is a full Estonia international with six caps after progressing through the U21s ranks.

He was an unused substitute as Estonia lost to England in a World Cup qualifier at Wembley in October 2007.

His list of club honours include being Estonian League runners-up in 2007 and 2008, whilst he was part of the FC Flora Tallinn team that won the Estonian Super Cup in 2009.

On a personal level he was voted the Baltic League's Goalkeeper of the Year in 2007.

He will wear United's number 30 shirt.