Arsenal have been given 10 days to complete the signing of Gary Cahill, according to Goal.com.
The England defender is expected to leave the club this summer, with Arsenal hotly tipped to capture the 25-year-old this summer.
However, in an aid to speed up the transfer, Bolton have demanded the transfer be sorted in the next ten days, leaving Arsenal in a race against time to secure a deal.
"Bolton want the deal done as soon as possible so they have plenty of time to make preparations for the new season without Cahill and formulate their transfer strategy," a source told Goal.com.
"Basically, they want it all sorted out by the end of next week and if it isn't, then they might close the door on any deal until the next window."
In a bid to tempt Bolton into selling Cahill, Arsenal have reportedly offered the likes of Carlos Vela and Henri Lansbury as part of the deal, but the money-strapped Trotters would prefer straight up cash to re-invest in a replacement.
Tottenham Hotspur are also in contention to sign Cahill, to take some onus off Ledley King and Michael Dawson, whose injury problems dogged Spurs consistently last season.
With Gael Clichy having already departed for Manchester City this week, one good piece of news for Arsenal should come in the form of Gervinho, who is expected to be confirmed as a Gunners player this week.