Mark Bosnich believes the arrival of Chelsea goalkeeper Petr Cech at Arsenal would "tip the scales" in the Gunners favour so much that Jose Mourinho would be foolish to sanction the prospective transfer.
The retired Australian stopper's comments also suggest that the Blues' veteran custodian could be the missing piece of Arsene Wenger's jigsaw, in his side's ongoing pursuit of that long-awaited Premier League title.
Cech has been heavily linked with a move away from Stamford Bridge this summer after falling out of first-team favour in west London, following the return of Thibaut Courtois from his loan spell with Atletico Madrid in pre-season.
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The 32-year-old has been limited to just five Premier League appearances in 2014/15 and 14 games in all competitions, and was recently quoted intimating his intention to leave the club if his current situation doesn't change when the transfer window reopens.
However, Bosnich is adamant Chelsea must not let Arsenal acquire one of the world's best goalkeepers, who still has plenty to offer in elite-level football over the coming years.
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"You don't win anything without a great goalkeeper and that will be in the back of Arsene Wenger's mind," explained the former Manchester United No.1 in a radio interview with talkSPORT.
"But I don't think he [Jose Mourinho] would sell him to Arsenal because I think that would really tip the scales towards Arsenal."
According to the Daily Mirror, Chelsea will accept offers as low as £10 million for the Czech Republic international, whose most recent comments suggest he feels his position as the Blues' back-up keeper has become untenable.
Wenger will be monitoring Cech's situation very carefully, especially in light of Wojciech Szczesny's struggles this term. The Pole has lost his place in Arsenal's starting line-up to summer signing David Ospina, but the Colombia international hasn't looked particularly convincing either.
Time for a new challenge
Despite becoming one of the most important players at Stamford Bridge during the Roman Abramovich era, Cech's time looks to have finally come to an end as he needs to move on to guarantee regular game-time.
He's much more likely to get that at the Emirates Stadium given the Gunners are a world-class goalkeeper away from mounting a serious domestic title challenge this term. Their form has improved significantly in 2015, but will rue a sloppy start to the season that should see Arsenal finish several points behind Chelsea in May.
Arsenal fans: Would you like to see Arsene Wenger sign Petr Cech this summer? Do you think £10 million is a fair price to pay? Share your thoughts below...