Former Arsenal captain Thierry Henry has got fans guessing after posting picture of himself alongside singer-songwriter Robbie Williams on Twitter , cryptically promising 'something special ' ahead of Red Nose Day 2015 . The biennial television charity appeal , which is part of the wider Comic Relief campaign , is set to air this year on March 13 . Williams , who has had UK No 1 singles with Millennium and Rock DJ , has taken part in previous Red Nose Day shows , and famously appeared dressed as a woman with Matt Lucas and David Walliams of the hit comedy series Little Britain in 2009 . Thierry Henry poses with singer-songwriter Robbie Williams ( left ) ahead of Red Nose Day . The Frenchman is Arsenal 's all-time leading goalscorer , netting 228 times for the north-London club . Williams ( centre ) appears with Little Britain 's Matt Lucas ( left ) and David Walliams for Comic Relief in 2009 . It remains to be seen whether Henry , who retired from playing football last year , will be prepared to try something as daring . Since hanging up his boots , Arsenal 's all-time leading goalscorer , has been working as a pundit for Sky Sports and taking the first steps into coaching , juggling a part-time role with the north London club 's youth development teams . Henry is known to support a number of humanitarian causes and is an ambassador for the children 's charity , UNICEF . Henry makes a point to fellow Sky Sports pundit Glenn Hoddle ( right ) ahead of the League Cup final . Williams performs at the Bambi Awards back in 2013 at the Stage Theatre in Berlin , Germany . Henry scores a penalty for Arsenal during the Premier League game against Charlton Athletic in 2007 .
Thierry Henry and Robbie Williams will work together for Red Nose Day . Former Arsenal captain Henry posted a picture of them on Twitter . Williams has appeared in Comic Relief sketches before . Comment: