Colin Hendry asks a question of two Rangers summer signings

Blackburn Rovers' first team coach Colin Hendry

Glasgow Rangers signed Joey Barton and Niko Kranjcar in the summer transfer window.

Joey Barton applauds fans as he is substitutedJoey Barton of Rangers

Former Rangers defender Colin Hendry has suggested to The Scottish Sun that he is not fully convinced by the signings of Joey Barton and Niko Kranjcar in the summer transfer window.

Rangers signed Barton on a free transfer following the departure of the former Newcastle United midfielder from Burnley at the end of the 2015-16 campaign.

The Gers also secured the services of former Tottenham Hotspur attacking midfielder Kranjcar in the summer transfer window.

Barton and Kranjcar are high-profile signings and are expected to make Rangers competitive in the Scottish Premiership this season.

Former Rangers and Blackburn Rovers defender Hendry understands the reasons for signing the duo, but he has asked whether or nor succeeding at Ibrox matters to them.

Rangers' Joey Barton in action with Burnley's Dean MarneyRangers' Joey Barton in action with Dean Marney

“Barton and Kranjcar are good signings,” Hendry told The Scottish Sun. “You have to ask the question if they are, well, not over the hill, but have had too much over their careers to worry about going to Rangers and being a success. We’ll find out."

Niko Kranjcar - Tottenham Hotspur warms upNiko Kranjcar at Tottenham Hotspur

Rangers kicked off their 2016-17 Scottish Premiership campaign with a 1-1 draw with Hamilton Academical at Ibrox earlier this month.

Mark Warburton’s side then got the better of Peterhead 5-0 at Ibrox in the second round of the Scottish League Cup.

The Gers defeated Dundee 2-1 away from home at Dens Park in the Scottish Premiership at the weekend.

Colin HendryColin Hendry

FIFA World Cup 2018FIFA 2018 World Cup Russia - click here for all of our coverage...

Register for HITC Sport - Daily Dispatch