Who will play in goal at the Emirates? Will Rafa consider making another change there?
It is only four games since Rob Elliot was dropped and Karl Darlow recalled to the starting line-up, yet already there are question marks over that decision.
Did Elliot do much wrong to be dropped in the first place?
And we all know Rafa has a new goalkeeper at the top of his 'wanted list' for January.
Two mistakes in two matches have led many fans to call for Darlow to be left out this weekend, but Benitez privately believes it is difficult to reverse switching goalkeeper so swiftly.
Some supporters have even suggested Freddie Woodman deserves a game. But will Benitez make such a radical decision to throw an inexperienced goalkeeper in? Will he stick with Darlow? Or will Elliot be recalled?
Arsenal is hardly the place to draft in a rookie goalkeeper, so I don't think it will be tomorrow.
And even throwing him in for the FA Cup tie against Luton may see some fans up in arms ... because all of us are DESPERATE for some cup success.