21-year-old Kiersey, a product of Everton's youth system having joined the Toffees at the age of ten, signed for the Saddlers on a short-term deal last summer, going on to make just three first-team appearances.
With persistent injuries hindering his progress at the club, Manchester-born Kiersey failed to earn a contract extension in January but was retained on a non-contract basis as he continued to work with the club's medical team in a bid to end his injury nightmare.
With the ongoing coronavirus outbreak forcing football to be suspended, Jack has spent his time working hard and could be in line for a return if he can show clear progress when the Saddlers return to pre-season training in the not-too-distant-future.
Speaking to the Express & Star's Walsall correspondent Liam Keen, Darrell said; "Jack was on a very small deal over a short period of time and we never got to the bottom of his injury, which was delaying him and stopping him playing.
"He’s gone away and worked very hard on his rehab. He’s a player that I’m not ruling out and might come in to take a look at in pre-season.
"The boy has got talent, but we’ll see how that develops and see where he’s at with his rehab. But I know he’s been working extremely hard and he’s somebody I’ve kept in touch with."