Hundreds of pounds of damage was caused by three men when they broke into St James Park.
Nothing was stolen at the home of Newcastle United at 6.20am on March 20 but Northumbria Police released CCTV images of two men they need to speak to about the incident.
Pc Steve Fairless said: "No doubt there are people who know what happened and who is responsible, and I'd urge anyone with information to get in touch as it's important we speak to the three involved."
Anyone who recognises the men in the images is asked to contact Northumbria Police on 03456 043 043 ext 69191 for the attention of police at Market Street Police Station, or alternatively contact independent charity Crimestoppers anonymously on 0800 555 111.
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