Newcastle United manager Alan Pardew says the club are prepared to work up until the small hours of transfer deadline day in order to force through additional signings.
The Toon have already made seven new additions this summer, the latest being Argentine Facundo Ferreyra on loan from Shakhtar Donetsk until the end of the season.
After suffering during the second half of last term after selling Yohan Cabaye in January, Newcastle are building the foundations for an improved campaign but Pardew says the club's activity won't end until the window closes at 11pm on 1 September.
"We've always maintained that we will watch the window until the last hours," he said.
"We've done some terrific business and I think it must be exciting for Newcastle fans that we've got some terrific, offensive players.
"I feel much more comfortable with the team and we can play a brand of football which is expected of us.
"I think we could really trouble teams this season, which is something we didn't do in the second half of last season."
Ayoze Perez, Jack Colback, Siem de Jong, Remy Cabella, Emmanuel Riviere and Daryl Janmaat are among the six permanent additions made by Newcastle who will this campaign seek to better last season's 10th place finish in the Premier League.
Ferreyra becomes Newcastle's seventh signing of the summer on a season-long loan deal and Pardew is confident the club can clinch a permanent move for the 23-year-old striker.
"We think he is a player who will grow and we have the option to take him on a permanent basis," added Pardew.
"We believe he will show the form from Argentina in the Premier League with us.
"[Fabricio] Coloccini is well aware of him and he had a big influence in Argentina. He went to Ukraine but didn't get many chances, he'll get more chances with us."