Jack Wilshere's season is over after Bournemouth confirmed the player had suffered a fracture of his left leg.
Wilshere's Cherries teammate Steve Cook told the Mirror: "There's obviously no love lost between Arsenal and Tottenham or between Jack and Tottenham fans but it's not nice".
The Arsenal star, who is now on loan at Bournemouth, was forced off in Saturday's 4-0 defeat to Tottenham after blocking a powerful Harry Kane shot.
Although it wasn't immediately clear what the nature of the problem was, an update posted on the Cherries' website has confirmed that X-rays have revealed the England global suffered a hairline fracture to his left fibula.
Arsenal midfielder Jack Wilshere has reportedly suffered another serious injury, and this one could be the mostly costly to date.
Cherries boss Eddie Howe said: 'It is a big blow to lose Jack.
He started 22 league games for Bournemouth before the fracture, which occurred in a challenge with Tottenham striker Harry Kane.
Scans later showed that Wilshere sustained a hairline crack to his left fibula - a similar injury to that which kept him out for the majority of last season.
This season, he has provided two assists in 29 Premier League appearances for Bournemouth, although he has been the club's leading chance creator to date in the current campaign.
Howe's comments do not infer that Bournemouth will seek to extend Wilshere's stay on the south coast beyond this season.