Javier Acuna has left Watford and joined Club Olimpia Asuncion in his native Paraguay.
Barnsley have signed former Manchester United defender Reece Brown from Watford for an undisclosed fee
Watford have signed striker Odion Ighalo on a one-year loan deal from Serie A side Udinese.
Queens Park Rangers boss Harry Redknapp has confirmed his interest in Watford striker Troy Deeney.
Watford clocked another clean sheet in pre-season with a 5-0 hammering of St Albans.
Sky sources understand QPR are interested in signing Watford's Troy Deeney to replace Liverpool-bound striker Loic Remy.
Watford had to rely on a solitary Matej Vydra goal to see off Boreham Wood in a pre-season friendly on Thursday night.
Udinese striker Odion Ighalo has revealed he is close to sealing a loan move to Watford.