H Azz85, not much detail about the car, mileage service history etc but...
I would say that is the turbo bearing is going / gone, so will need a rebuild
also swap out the oil supply and return lines if you do not know the history of the car as turbo's can fail due to oil starvation as over time if the engine is not cooled sufficiently oil can boil off in the lines going solid / crystallizing and reducing the flow to the bearing
less likely is oil coming past the valve seats or if your overall performance has dropped possibly piston rings due to lack of seal and oil being forced past the piston rings - check compression but with piston rings going the engine could start to sound rough