But Pickering has confirmed that the 23-year-old, who has played 114 games since making his debut in 2005, wants to be traded to the Bulldogs.
"We've told Brisbane that he wants to get to the Bulldogs if possible," Pickering said on Trade Week Radio on afl.com.au on Tuesday afternoon.
"The Dogs are pretty confident they'll get him, they're pretty keen to get him, but Brisbane obviously have got to be satisfied by the deal for him to get there."
Representatives from the Bulldogs and Lions met at Etihad Stadium on the opening day of trade week to discuss a possible deal to enable Sherman to move south.
"I'm pretty confident the Dogs will give up the compensation pick they got for losing Harbrow [to Gold Coast], which I think will fall in at about 29, if they were to use it this year," Pickering added.
"I think that's probably fair, but it's a matter of whether Brisbane want a little more."
If the Bulldogs can't satisfy the Lions, Sherman could be targeted by a number of other clubs.
"He's certainly caused some interest," Pickering said.
"The three clubs that have been pretty keen are Richmond, the Bulldogs and Sydney. Melbourne have also shown some interest in him.
"He's that sort of player, I guess. He's got pace and can add that to a midfield or forward line.
"But Brisbane have got be prepared to trade him. That's what it comes back to, because his contract has got another couple of years to run."
Meanwhile, another of Pickering's clients, Collingwood forward Leon Davis, also could be on the move.
"He's not so much on the market, as he's contracted for another year," Pickering said.
"I'm not sure what's going to come out of today's meetings, but if Collingwood get some interest from one of the Western Australian clubs - Fremantle or West Coast - then he'd certainly consider it, as that's where his family is.
"Probably the South Australian clubs might also be in the market a little bit as that's where his girl comes from.
"I think he'd like to get around his family a little more, but again it's not going to be an easy one as he's 29, so it's got to be the right fit."
Follow our complete coverage of the 2010 AFL exchange period from October 5-11. No trades are official until paperwork has been accepted by the AFL and formally recognised after 2pm on Monday, October 11.
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