Malan says the Stags, who are the trophy defending champions, intended to "get the best out of him in the month before he heads back to England".
Championing the "x-factor skills" of Ryder, he says the left-hander was a world-class performer and they will welcome him with open arms in the hope of "seeing some special stuff in the top order on Sunday" at Mclean Park from 11am.
"You can't be disappointed in someone who cannot play because he's injured," he says when asked if fans will be disappointed with the former Napier Boys' High School pupil who used to consider the Bay his hometown before heading off to Wellington and Otago to ply his domestic trade after acrimony amid a rash of drinking and disciplinary sessions.
The Will Young-skippered CD, after the departure of retired Kruger van Wyk, are without Doug Bracewell, Adam Milne, Ross Taylor and George Worker who are in the Black Caps mix for the ODI series against touring Sri Lanka.
Nelson all-rounder Josh Clarkson, 18, will make his one-day debut and Bay medium-fast bowler Blair Tickner is a maybe as Ben Wheeler works his way back into the Black Caps' equation from a stress-related back injury.
Bay seamer Kurt Richards is bracketed with Wairarapa's Seth Rance as he recovers from a hamstring problem although Malan say he looked fine at training.
Andrew Mathieson, who earned a cameo Black Cap stint after becoming the highest wicket taker last summer, will spearhead the attack.
Newcomer Navin Patel, of Manawatu, will miss the two rounds because of pre-arranged holiday plans but Marty Kain and Ajaz Patel are the Central spinners.
Both teams:
CD STAGS (from): William Young (c, Taranaki) Ajaz Patel (HB), Tom Bruce (Taranaki) Seth Rance (Wairarapa)/Kurt Richards (HB), Josh Clarkson (Nelson), Jesse Ryder (Wairarapa), Dane Cleaver (wk, Manawatu), Bevan Small (Manawatu), Martin Kain (Nelson), Ben Smith (Wanganui), Andrew Mathieson (HB), Blair Tickner (HB).
CANTERBURY KINGS (from): Ken McClure, Cameron Fletcher, Edward Nuttall, Timothy Johnston, Kyle Jamieson, Peter Fulton (c), Todd Astle, Hamish Bennett, Leo Carter, Andrew Ellis, Matt Henry, Roneel Hira, Cole McConchie, Ryan McCone, Henry Nicholls, Logan van Beek.