CARLTON will remain steadfast in refusing to give up Pick 5 in a deal for wantaway Greater Western Sydney defender Caleb Marchbank.

The 19-year-old officially requested a trade away from the club earlier this month, nominating the Blues as his preferred destination after playing seven games in two seasons with the Giants.

Taken at Pick 6 in the 2014 national draft, it’s understood GWS will almost certainly request a first-round selection in return for Marchbank.

However, Carlton CEO Steven Trigg has once again moved to declare that the club’s first pick is off the table, backing list manager Stephen Silvagni to find another way to complete the deal.

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“GWS will be listening, but we wouldn’t give up Pick 5,” Trigg told SEN.

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“They’ll probably want it, but we wouldn’t be going there because it’s important for us to stay high in the draft.

“We’ll try and find another way for it to happen. Stephen did that last year with a multi-pronged transaction and I suspect that’s the way it will be again.”

Carlton completed a complicated deal with GWS during last year’s exchange period, which saw the Blues trade Picks 33, 63 and 95 for Lachie Plowman, Jed Lamb, Liam Sumner and Andrew Phillips.

Carlton also flipped a future first-round selection, received in a trade that saw Lachie Henderson move to Geelong, in return for Pick 10 as part of the deal.

Now, they will be forced to manoeuvre in the market again in order to secure Marchbank.

“He’s nominated Carlton and we’re rapt about that,” Trigg said.

“Now we’ve got to try and get the deal done. But he will add to us really significantly.”

Caleb Marchbank in a contest earlier this season. Picture: Colleen Petch. Source: News Corp Australia

Trigg also confirmed that Carlton has offered Irish defender Zach Tuohy a three-year contract extension in an attempt to ward off interest from rival clubs.

Tuohy, who is currently out of contract, is believed to have received significant attention from the likes of Sydney and North Melbourne.

But Trigg said the club would like to see the 120-game player remain at the club.

“We’d like Zach to stay,” Trigg said.

“He’s got a very healthy three-year deal in front of him and like a bunch of players in the competition at the moment, I think he’s just weighing up his options, which is not unreasonable.

“But we want him to stay at the footy club. He’s been very durable, very strong and he’s a senior player.

“I know there are a couple of clubs who are having a conversation with his management, but we’ll see where that one lands. We’d like him to stay.”