Both sides clash at Upton Park at 12.45pm on Saturday.
Saturday's contest in East London is certainly a must-win game for both sides - albeit for different reasons - as the Gunners bid to keep alive their slender hopes of pipping Spurs and Leicester City to the title, whereas Slaven Bilic's boys look to strengthen the prospect of playing Champions League football next term.
The North Londoners perhaps boast a slight advantage by virtue of the fact that Bilic may well have one eye on the FA Cup quarter-final replay with Manchester United in midweek - a factor which could dictate his team selection to some extent.
Gray does not know if the Croat will play a full-strength side, but claims that the Hammers are unlikely to lose if they do indeed field all of their heavy hitters at the Boleyn Ground.
"Arsenal are still very much in with a chance of winning the Premier League but of their remaining seven games they have to win at least six of them and only draw the other one. That would give them nineteen points and a real chance of pipping Leicester and Spurs for the title," he wrote on Paddy Power.
"If Arsenal are going to drop points over the remaining games then I think it’s going to be at West Ham. The Hammers’ form is good, their confidence is high and they’re very difficult to beat at home. They do have an FA Cup semi-final replay coming up midweek and that could be one thing that’s in Arsenal’s favour.
"I don’t know if Slaven Bilic will play all his best players or rest some of them for this huge replay against Manchester United. If he plays his best team I think they’re good enough to get something from this game. Which is why I fancy this to be a score draw. Not a high scoring draw but I do see both teams scoring.As long as Arsenal don’t lose they still have the games and the potential to win this league."
Victory for the hosts would propel them fifth in the table, level on points with fourth-placed Manchester City who could restore the three-point cushion by beating West Brom tomorrow evening.