Charlton striker Nicky Ajose has not made a Bury matchday squad in League One since August.

Ajose, 26, joined the Shakers on a season-long loan after falling down the pecking order at the Valley last season.

But he has featured just five times for the relegation-threatened side, which has led to concerns between himself and Bury’s management staff.

And Robinson, who also loaned Ajose out to Swindon for the second half of the 2016/17 campaign, says the former Manchester United graduate went to Bury to play regularly.

He told News Shopper: “He’s found it difficult since he's come to Charlton.

“He went to Swindon and got relegated last season and things haven't materialised this year. I don't really know the reasons why [he’s not playing] so I’d be guessing.

“But he certainly went there to play. It’s just what the manager decides to do and that’s not for me to get involved in other managers’ decision processes.”

Charlton are short in the striker department following the summer departures of Ajose, Tony Watt, Igor Vetokele and Lee Novak.

Josh Magennis has played every minute of every league game that he’s been available for this term, with Rangers loanee Joe Dodoo still waiting for a first-team chance. 

Former Newcastle and Blackburn striker Leon Best has been on trial with the Addicks for nearly a month.

And Robinson hopes to play Best in an Under-23s game.

He said: “He’s trained really well. We’re trying to get round the rules and see if we can play him in an U23s game.

“We’ve got to see from a legality perspective whether that’s an option or not for him.”

When asked if the club were any closer to offering Best a short-term deal, Robinson added: “No. He’s quite a cool lad and doesn't really get too fussed about it. 

“He's come in and he's enjoying it. He’s certainly still quick. It’s all about building up his strength to be able to be explosive in his movement.”