By Martyn Herman LONDON (Reuters) -Aston Villa striker Ollie Watkins proved a thorn in Arsenal's side yet again as he completed his side's comeback with the equaliser in a 2-2 draw that damaged the London club's Premier League title hopes on Saturday.

Arsenal face a tough challenge in the Premier league when former manager, Unai Emery, and eighth place Aston Villa come to Emirates Stadium.

Aston Villa striker Ollie Watkins proved a thorn in Arsenal's side again as he completed his side's comeback with the equaliser in a 2-2 draw in the Premier League

Arsenal has allowed at least one goal in seven of its past eight fixtures, and our expert EPL predictions expect that trend to continue on Saturday.

Arsenal welcome former boss Unai Emery and his Aston Villa team to the Emirates Stadium on Saturday in a key test of the Gunners' title aspirations in the English Premier League. The pressure was eased on Arsenal manager Mikel Arteta in midweek as his side battled back from a goal down to beat their north London rivals Tottenham on Wednesday.

Arsenal let a two-goal lead slip to draw 2-2 against Aston Villa on Saturday night, as the Gunners once again lost ground to Liverpool in the title race. The hosts started the match quickly, squandering chances early on,

After an emotional victory over North London rivals Tottenham midweek, Arsenal look to build on that success with a visit to Aston Villa on Saturday.