Russell Martin praised the impact of two of his substitutes in Tuesday’s fight-back against Shrewsbury Town.
Carlton Morris came off the bench at half-time and scored the goal which ignited the comeback while Kasumu, who was brought on after just 30 minutes, changed the game in the middle of the park as well as provided the assist for Cameron Jerome’s leveller.
“Carlton Morris was excellent when he came on,” the boss said in his post-match press conference.
“It means so much to Carlton to be here and he's desperate for it to work. I think he's been a victim of trying too hard at times so I've told him to relax because we know what he can do.
“That was him back to his best – linking up play, running in behind, bringing players into it. And he got his goal to cap it off.
“We need him to maintain that now.”
On Kasumu, Martin added: “We needed David on to protect the back three and he was outstanding when he came on.
“He's a young player, who has had ups and downs in form, but he once again showed what he's capable of. He was strong, athletic and his use of the ball was a better in recent weeks. With the pace of the game dictated, we needed him.”