Stern words from Portsmouth boss John Mousinho were the catalyst to Norwich City loan export Abu Kamara netting the winner in a 2-1 win over Leyton Orient in the EFL Trophy.

High-flying Pompey rotated their squad and had to endure adversity after ex-Norwich defender Sean Raggett saw red inside the opening 20 minutes. 

- Watch Kamara's winning goal for Portsmouth below

Christian Saydee had given Pompey an early lead before ex-Ipswich striker Joe Pigott levelled the scoring just after the interval. 

His goal arrived in the 74th minute as Kamara was rolled in behind before finishing confidently. That helped book Portsmouth's place in the knockout stages of the competition. 

Kamara has struggled for form of late at Fratton Park, but Mousinho launched a passionate defence of the striker after groans from supporters towards his efforts. 

The challenge for the highly-rated City forward is achieving consistency - a winning goal will undoubtedly provide a much-needed confidence boost. 

Norwich are monitoring his progress with interest and rate the young forward highly. His first loan has been beneficial for all parties so far. 

Kamara has revealed that Mousinho provided some unlikely inspiration for his winner after he was criticised by his boss from the sidelines in the first period of the contest at Brisbane Road.

"He (Mousinho) had a bit of a pop at me in the first half for not running," Kamara told the Portsmouth News after his late winner. 

"The incident was when Jewie (Jewitt-White) played the ball in behind. I wanted it into feet so didn’t run and all I could hear was screaming behind me.

"It was coming from the bench, so I knew what was going on there. So when I saw the ball break in the second half I knew I had to get my head down!

"Then once Kas (Yengi) saw me running he knew he had to feed the ball into my path. I couldn’t complain at the ball which came because it was literally on my toe, so my touch took it past the defender. Then it was about putting it away - goal.

"I came to add goals and assists like that, so hopefully I can add many more."