Arsenal have scheduled a medical at their London Colney training headquarters as they close in on a new signing, Football Insider sources understand.

Arsene Wenger is working on a deal to sign a forward as he makes a last-ditch attempt to strengthen his front line before the Premier League deadline at 6pm on Tuesday.

Sources have told Football Insider that Arsenal are in talks over a mystery striker and have now booked a medical at their Hertfordshire base.

The Gunners manager has been in the market all summer for an “extraordinary” player who can go straight into the first team.

Arsenal’s No1 summer target has been Real Madrid’s Karim Benzema, while they have also turned their attention to Edinson Cavani of Paris Saint-Germain.

A a high profile transfer so late in the day might be regarded as unlikely, but sources have told Football Insider that Arsenal are currently working on a deal to land a front man.

With doubts as to when Danny Welbeck will be fit to play, Wenger accepts that he needs more firepower if Arsenal are to genuinely challenge for the Premier League title.

The Gunners have scored just three goals in their opening four Premier League matches, one from Olivier Giroud and two via own goals.

Giroud got the nod to lead the attack in the first three games but he was overlooked in favour of Theo Walcott for last Saturday’s 1-0 win at Newcastle.

The Arsenal transfer news that Wenger is still trying to buy a striker is a boost for supporters concerned that the manager has only bought one player this summer, goalkeeper Petr Cech in an £11million deal.