Safety speed and corner speed are usually two different things (Garney Henley excepted, even in his late thirties he could outrace most CBs as a safety), so I'm not surprised that Karikari is having some difficulty adjusting. One's angles re closing for the hit and tracking the ball are also different, so the readjustment factor is at play there as well.
Karikari has good speed for a safety. Whether he will be able to play corner with the Cats, we'll see.
Oski Wee Wee,