According to The Scottish Sun, Nottingham Forest boss Mark Warburton is weighing up a move for Rangers goalkeeper Wes Foderingham.
Warburton brought the 26-year-old to Rangers in 2015 during his spell at Ibrox and a reunion at Nottingham Forest appears to be a possibility.
The striker, who managed six goals in 12 Championship outings last season, was used sparingly by Warburton when he took the reins at the City Ground and could be available.
Plus, Warburton is on the verge of bringing in striker Daryl Murphy, further lessening the need for Vellios.
Of course, Caixinha brought in strikers Eduardo Herrera and Alfredo Morelos this summer, but neither are proven in the Scottish Premiership.
Neither is Martyn Waghorn - who scored a paltry seven goals in 32 top-flight matches last season - so Kenny Miller, at 37, is Rangers' biggest goal threat.
They need a striker and Vellios represents something they don't have up front: height.
The 6'4 Greek, who has six caps for his country, would offer Caixinha something different and the 46-year-old should ask for him in return for Foderingham.