Recently appointed manager Gianfranco Zola has moved to bolster his squad, by raiding new chairman Giampaolo Pozzo's other clubs Granada and Udinese
The Italian has brought former Arsenal goalkeeper Manuel Almunia and out-of-contract defender Fitz Hall in on one-year deals whilst also signing five players on season-long loans.
Three of the loan signings come from Italian side Udinese, with midfielder Almen Abdi and forwards Matej Vydra and Steve Leo Beleck joining Zola's squad for next season.
Meanwhile, defender Daniel Pudil and striker Ikechi Anya have both come in on temporary deals from La Liga outfit Granada.
The deals have been smoothed due to the English outfit's new owner, Giampaolo Pozzo, also owning a controlling stake in both the European clubs.
Watford technical director Gianluca Nani expressed his delight with the acquisitions but voiced his intention to make further additions.
Nani told the club's official website: "We expect these players to make a very positive impact on Gianfranco Zola's squad.
"We are constantly looking to add quality here for Watford, and this is a task which will be ongoing throughout the season."