Manchester City are taking steps to make the Etihad Stadium bombproof as Premier League clubs beef up security in response to the risk of a terrorist strike.
Sportsmail understands that hundreds of windows at City’s glass-fronted home have been fitted with a film which prevents panes from shattering in an explosion.
Permission to drive outside the 55 000-capacity stadium has also been removed. Cars were previously allowed to drive down one side of the Etihad, with the club shop situated at the opposite end of the ground to the main entrance. That is now forbidden, even for staff. City - who travel to Championship high-fliers Huddersfield in the FA Cup on Saturday - declined to comment.
As revealed in January, the Premier League wrote to all 20 clubs advising them to be extra vigilant against terrorist threats.
Manchester United employed a counter-terrorism chief - the first appointment of its kind in the Premier League - and have introduced new measures.
Their matchday staff search for bombs underneath all cars at club car parks. And all staff from cleaners to the top brass are frisked by security every time they enter Old Trafford.
United placed anti-shatter glass film at their stadium in January last year. Meanwhile, City were on Thursday fined £35 000 for breaking anti-doping rules - a sanction which will lead to a review of punishment guidelines.
It was the highest fine possible under current rules, after City admitted they had failed to provide accurate information about their players’ whereabouts.
But FA chiefs have privately admitted the level of fine does not send out the right message and plan to come down harder on those who fall foul in the future.
Clubs must say where and when training sessions take place and provide players’ home addresses, but City breached regulations three times in 12 months.
Gabriel Jesus will travel to Barcelona for treatment on the broken metatarsal he sustained at Bournemouth on Monday.
The Brazilian will be seen by Dr Ramon Cugat, favoured by City boss Pep Guardiola for more than 20 years.
Kevin De Bruyne, Vincent Kompany and Ilkay Gundogan have already been to see Cugat and City hope Jesus could be back within two months.