The former Sheffield United starlet switch to Ewood Park in the summer.
Slew said: “There have been a lot of youth team players that have pushed into the first team and that is the great thing about this club. There are always chances for you and that is why the likes of Junior have got where they are.
“Rovers have given them the chance and that is what so good about the club and hopefully I get that chance one day.
“There are a lot of young boys pushing through and we all believe we can go all the way here. That is the difference between this club and the others. You get that chance.”