It doesn't find the driver but it should give you the option "Search". You can then look for Canon in the options offered followed by your model (or nearest much, you need a MG5200 series driver).
If it is not there download from the link I posted. There is a rpm driver.
Installing such driver(s) is easy via a konsole using command rpm install driver.rpm ("driver' to be replaced by actual driver).
Easiest is to browse with Dolphin to the spot where the driver is, then via tools open a konsole.
Become root (type su <enter>, root password <enter> and your there. Type ls <enter> to see the file(s)
No issue the command rpm install dadadada
You can highlight the driver found and the paste it after the command using middle click for ease and to avoid typo's.
You need this driver:http://support-asia.canon-asia.com/contents/ASIA/EN/0100302402.html