Defender Mason Redman is 50-50 chance to be available for Essendon’s Sunday afternoon clash with North Melbourne.

The 24-year-old suffered internal bruising after a heavy fall from a marking contest, resulting in Redman being subbed out of Essendon’s loss to Collingwood.

Head of high performance Sean Murphy said Redman was still feeling the effects of the injury during Wednesday’s main session but would be given every chance to prove his fitness.

“That heavy knock certainly took the wind out of his sails,” Murphy told Essendon FC’s Liberty Financial Performance Update.

“He was cleared of any serious damage that night and he was pretty sore today and he’ll have to be a test for this weekend.

“If he gets through main training he should be ok, but at this point of the week, we’ll just have to wait and see.”

Midfielder Darcy Parish is making positive strides towards a return from a calf injury.

While he’ll be unavailable for Sunday's fixture, Parish will be put through his paces this weekend as he pushes for round 21 selection.

“Darcy’s going really well,” Murphy said.

“He ticked off a really good session on the weekend. He’ll miss this week but get (another) solid session in this weekend and all things going really well, he’ll be available for the GWS game.”

In also positive news, key forward Kaine Baldwin will make his return from a calf injury this weekend.

Murphy said barring any hiccups during this week’s training, Baldwin will return via the VFL.

“For ‘Balders’, there’s some really good news for him,” Murphy said.

“He’s at the end stage of the rehab for his calf.

“He ticked of all the markers on the weekend. He’ll train fully across the week and if he gets through this, he’ll play through the VFL this weekend.”

Injury list - Round 20