Yes, that is Uroctea durandi - which is a common stowaway in cork bark harvested and exported from Mediterranean for the pet hobby. We occasionally get specimens sent to us at the museum to identify and they can vary in the colouration of the opisthosomal spots. Totally harmless but non-native and should not be released. Given you keep tarantulas, you could easily house this specimen as they require little husbandry. If that is not of interest to you, I would be happy to take the specimen for the remainder of its natural lifespan.