Severino on trial with Perth Glory
The 27-year old ended his contract with Maltese club Sliema Wanderers and is training with the West Australian club in the hope of winning an A-League contract.
"He's got a lot of experience and technically he's very good," Mitchell said.
"I think he'd add something to the squad but I've just got to make sure I spend money in the right areas."
Originally from Sydney, Severino has also had stints with Iceland club Keflavik and Swedish side Umea FC among others.