QPR have signed Tottenham's Brazil midfielder Sandro and Dynamo Kiev's Croatia playmaker Niko Kranjcar.
Sandro, 25, has agreed a three-year deal to link up again with manager Harry Redknapp, who signed him for Spurs from Internacional in 2010.
Kranjcar, 30, returns to Loftus Road for a second successive season on loan.
Redknapp described Sandro as a "top-class professional", adding he was a "huge fan" of Kranjcar and was "really pleased" to have him back.
|QPR's transfer window signings|
|Rio Ferdinand (Manchester United), Steven Caulker (Cardiff), Jordon Mutch (Cardiff), Leroy Fer (Norwich), Jack Robinson (Liverpool), Alex McCarthy (Reading), Mauricio Isla (Juventus, loan), Eduardo Vargas (Napoli, loan), Sandro (Tottenham), Niko Kranjcar (Dynamo Kiev).|
Sandro - capped 17 times - made 106 appearances for Tottenham but has not played under new boss Mauricio Pochettino.
Redknapp told his club's website: "Tottenham fans loved him and I'm sure the QPR fans will too. He's been a massive target of mine all summer."
Sandro said: "I like new challenges and this is one I'm really looking forward to. Working with Harry, who I share a great relationship with, is very special to me."
Redknapp described Sandro's signing as a "real statement", adding: "He brings energy, aggression, power and quality. He'll lead by example for us."
Kranjcar, who also played for Redknapp at Spurs, said it was a "great feeling" to be back at Loftus Road.
He added: "The fans were phenomenal last season. I had a great relationship with them and hopefully it's only going to get better.
"I really feel happy here, at a club where I really want to play, and I play with all my heart."