That’s according to Ally McCoist.
The Rangers boss has made seven signings this summer after Joe Aribo was announced yesterday with the midfielder joining from Charlton Athletic for a compensation fee of £300,000.
Aribo follows Sheyi Ojo, George Edmundson, Greg Stewart, Steven Davis, Jake Hastie and Jordan Jones in joining the Gers this summer.
And Gerrard now wants to bring in another centre-back to bolster his options at the back, which are currently Edmundson, Connor Goldson and Nikola Katic.
The Daily Record claim the Liverpudlian coach is making a third attempt to reunite with former Liverpool team-mate Martin Skrtel, who is a free agent.
The experienced 34-year-old Slovakian left Fenerbahce recently and has been in talks with the Glasgow club recently following attempts to bring him to the Scottish Premiership last summer and in January.
But former Rangers boss McCoist is not completely convinced about Skrtel, who spent seven years alongside Gerrard at Anfield, given the manner in which another vastly-experienced defender in Alves struggled at the club with his contract terminated by mutual consent after just one season.
The Portuguese veteran was on big money for the Light Blues, with Skrtel likely to command similar having been paid over £60,000-a-week at Fenerbahce.
McCoist told talkSPORT: “One or two of the signings might not go right into the team. They need a couple of signings that would do that.
“Martin Skrtel could be one of them. Whether he’s still got it – I’d hope so.
“Rangers signed Bruno Alves before, a top, top-class centre-half but that didn’t really work out.”
Gerrard – who made 15 signings last summer – has meanwhile declared that his business for the summer could be done once Rangers sign another central defender.
The 39-year-old also played down suggestions captain James Tavernier and 30-goal striker Alfredo Morelos have been the subject of bids.
He said at Rangers’ pre-season training camp in Portugal: “There’s been a lot of speculation about Tav and Alfredo and I’m not surprised.
“They both had very good seasons but there hasn’t been a single bid for either or for any of my players up until now.
“Do I have to sell to bring in? I don’t think so. I’d be quite happy to go with what we’ve got if we can get another centre-back in.
“Am I confident of keeping Tav and Alfredo? It’s not a question I need to answer now because there are no offers.
“Am I expecting a bid? Possibly. I’ll make a decision if and when a bid lands.
“Every player has a price but if bids are nowhere near acceptable the answer’s a straight ‘no’.”
Gerrard also remains keen on Ryan Kent from Liverpool, who spent last season with Rangers on loan and was named PFA Scotland’s Young Player of the Year.
It is expected that the Gers will have to wait to hear from the Reds, with Leeds also keen on Kent and a permanent exit from the Merseyside club still a possibility for the £12million-rated attacker.