The Hibernian manager’s comments would be bad news for Glasgow Rangers, Wolverhampton Wanderers and Derby County.
The Villa manager is pleased with the trio of players he has brought in but emphasised that he still needs to cut down his squad.
Liverpool were 1-0 winners during their pre-season friendly with Tranmere on Friday.
The Baggies are said to be eyeing a move for Dieumerci Mbokani.
Steven Fletcher recently joined Sheffield Wednesday after leaving Sunderland at the end of last season.
Part of Manchester United's pre-season sees them facing Manchester City, Borussia Dortmund and Galatasaray.
The Magpies midfielder starred for France at Euro 2016.
West Ham United have signed Gokhan Tore on a season-long loan from Besiktas.
Everton need to sign Arkadiusz Milik as the replacement for the wantaway Romelu Lukaku.
West Ham United's Adrian says that he and his teammates cannot wait to move to the club's new home.