Evans explained to the clubs website that it won't be a problem bringing in cover for next weeks game with Burton should Wilson not be fit, after he limped off in yesterdays defeat to Hull in the first half.
The boss explained: "Willo took a knock to his ankle after a strong but fair tackle early in the match. He tried to get through but in the end he had to accept he was struggling to continue.
"In all probability it will be tomorrow (Monday) before we know if the lad will be missing for a few days or weeks."
Evans has been in contact with targets today in case he needs to act later in the week and bring in a loan signing.