O’Halloran has been in superb form for St Johnstone so far this season, having joined the Scottish Premiership club on loan from Rangers in the summer transfer window.
The 26-year-old forward will remain at McDiarmid Park until January, and Caixinha has suggested that it will help the Gers help sell him if he maintains his good run of form.
“I just hope that he continues doing well because ultimately he’s our player,” Caixinha told The Scottish Sun about O’Halloran. “So if someone wants to buy him because he’s scoring goals then it’ll be perfect for us.”
Caixinha’s comments suggest that O’Halloran has no future at Ibrox as long as he is in charge.
The Rangers manager has also said that the forward is not his type of player, as reported by The Daily Record.
The forward’s current contract at Rangers runs until June 2020, according to Transfermarkt.co.uk, but if Caixinha remains in charge of the Gers, then it is hard to see him play for the Glasgow giants again.
O’Halloran joined Rangers from St Johnstone in February 2016 when Mark Warburton - now at Nottingham Forest in the Championship in England - was the manager for a transfer fee reported by The Daily Record to be worth £500,000.