Sunderland have agreed a £10m deal to sign defender Omar Alderete from Spanish side Getafe with a further £900,000 in add-ons.
The 28-year-old's move is subject to a medical and he is expected to sign a four-year deal at the Stadium of Light.
The move adds a left-sided centre-back to manager Regis le Bris' squad as they look to strengthen, having earned promotion back to the Premier League by winning the Championship play-off final in May.
Once the deal is concluded, Paraguay defender Alderete will become Sunderland's 11th signing of the summer for a total expenditure of just under £150m if all add-ons are included.