United are attempting to sign a new goalie to provide competition for Kovar and fellow 18-year-old custodian Alex Fojticek. United are keen to conclude a deal for Woolston but he is understood to be open to heading abroad to revive his career. United signed former Leeds goalkeeper Theo Richardson on an 18-month deal in January 2017 to provide back-up in the U23s.
Woolston's distribution and ability have impressed United coaches but he stands at around six feet tall, which is partly why Newcastle released him. South Shields-born Woolston also spent time with Darlington and Sunderland's academies.