Manchester United are close to signing goalkeeper Lee Grant for about £1.5m from Championship side Stoke City.
United boss Jose Mourinho wants to let Portugal Under-21 international Joel Pereira go out on loan for the season.
With Sam Johnstone to join West Bromwich Albion for £6.5m, Mourinho will need back-up for first-choice pair David de Gea and Sergio Romero.
Johnstone, on loan at Aston Villa for the past 18 months, is set to undergo a medical later on Monday at the Baggies.
The 25-year-old, who missed only one Championship game last season and started Villa's play-off final defeat by Fulham at Wembley, is seen as potential replacement for Ben Foster.
Watford are closing in on a deal for England international Foster, who, along with defender Craig Dawson, is expected to be fined by Albion for refusing to join the club's pre-season tour of Portugal.
Grant, 35, has played over 500 professional games in spells at Derby, Sheffield Wednesday and Burnley.
He joined Stoke in 2016 but only made five first-team appearances last season, his last coming in a 3-0 Premier League home defeat by Liverpool on 29 November.
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