By Manchester correspondent Alex Stevens

Manchester United will continue their spending spree by signing Argentina goalkeeper Sergio Romero on a free contract, Football Insider sources understand.

The 28-year-old is flying out to Seattle, where he will join United’s pre-season tour of the United States and undergo a medical.

Romero will then become United’s fifth major summer signing, joining new recruits Bastian Schweinsteiger, Morgan Schneiderlin, Memphis Depay and Matteo Darmian.

The goalkeeper is set to replace Victor Valdes in the United squad as the Spanish goalkeeper looks for a new club following his dramatic fall-out with the club.

Manager Louis van Gaal has told Valdes to find a new club after he refused to play for United’s Under-21s last season. The former Barcelona No1 is understood to have offers from MLS clubs and is set to move to the US.

This will create a new space in the United squad, which will be filled by Romero, who will challenge for the No1 spot with either David De Gea or his replacement if the Spain international completes a move to Real Madrid, which is still expected.

Romero is the current Argentina No1 and has won 64 caps for the national team. He has been without a club after his Sampdoria contract ended last month.