Lionel Messi has been accused of invading Gary Lineker's turf, not as a leading striker... but as the new face of crisps!

Lineker, who has long been a Walkers' brand ambassador, tweeted a light-hearted message on Twitter on Thursday.

It read: 'Hang on! What's going on here, Messi? Muscling in on my territory,' with a link to Messi's advert for crisp manufacture Lays.

New face of crisps: Lay's new commerical features Barcelona and Argentina superstar Lionel Messi

Selfie o'clock: The advert sees a number of people asking Messi to take a picture with them

Picture please: Messi happily obliges with numerous 'fans' he is stopped by

All gone! Messi realises that all those fans just wanted to steal his crisps, to his obvious disappointment!

Lay's, Walker's namesake in America, have picked the Barcelona striker to promote the brand in a new commercial to which Lineker was referring.

The Argentinian endured a testing evening on Wednesday with his national side, having thrown up on the pitch during a 0-0 against Romania.

With a vital Champions League against Manchester City coming up in less than a week, Barcelona will be hoping it wasn't because the striker's been eating too many crisps!

Avert your eyes! Lionel Messi appears to vomit during Argentina's international friendly against Romania

Target: Messi spent large parts of the match being targetted by lasers from supporters in the crowd

What's going on? Messi looks less than pleased as Argentina only managed to secure a 0-0 draw against Romania

Too fast: Romania defender Bourceanu attempts to stop Messi by any means necessary

Record breaker: Messi's penalty gave Barcelona a vital lead against City in the Champions League last-16 match

Inside or out? Demichelis was sent off for this challenge but doubts were raised over where it took place

Surrounded: Messi looks to escape the clutches of Vincent Kompany and Pablo Zabaleta