Having signed 13 players last summer to overcome the gap from League One to the Championship, there will probably be significantly fewer arrivals this time around.
"I think they need at least three or four players. Is that a major overhaul? I don't think so," former Wrexham player and manager Brian Flynn told BBC Radio Wales Sport.
Once the club's stance on issues including loan players and contracts is fully clear, Parkinson can press on with his pursuit of players.
"We know where we'd like to strengthen and what we need to improve on," the manager said in the aftermath of his side's 2-2 draw with Middlesbrough.
"And we'll do that, and we'll make this squad as strong as we possibly can to mount a challenge next year."
Co-owner Ryan Reynolds famously said that running a football club is like "lighting money on fire, except it doesn't keep you warm".
But the Deadpool star, along with co-chairman Rob Mac, is likely to sanction further significant spending in the upcoming window.
Particularly on the back of James McClean's departure in January, the wing-back positions need attention given Liberato Cacace's injury record and Issa Kabore's loan from Manchester City expiring.
As seen with Zak Vyner, who joined from Bristol City in January, Parkinson is more than willing to reignite interest in targets from previous windows.
Portsmouth's Terry Devlin and Istanbul Basaksehir's Festy Ebosele were some of the wing-back options in January and could, among others, be pursued again.
Wrexham had numerous issues in midfield in the latter stages of the season and may well seek to upgrade in that position.
Parkinson has also always been keen to have an array of reliable forward options at his disposal. An additional Championship-ready forward would probably be welcomed at Stok Cae Ras.
Alterations in other areas, notably in the goalkeeper department and in defence, could hinge on the situations of some of those already in Wrexham's ranks.
