Arsenal ended a five-game winless streak in all competitions by thrashing London rivals Crystal Palace 4-1 with four goals inside the first 22 minutes in the Premier League on Saturday. The club-record signing was without a goal since the 3-1 defeat against Manchester United at the start of December.
Gunners boss Arsene Wenger said that the Chile global could be involved if the deal had not been completed, but he was again omitted.
Arsenal secured a thumping 4-1 win over Crystal Palace after three goals in the opening twelve minutes.
Arsenal hadn't recorded a victory in 2018 as they slipped down to sixth in the Premier League, but four first-half goals against a lacklustre Palace side gave them an unassailable lead at the interval.
Mesut Ozil and Jack Wilshere both shone in a side which could soon boast more attacking options, should Henrikh Mkhitaryan join as part of the Sanchez deal, while Borussia Dortmund officials confirmed an enquiry had been made about Pierre-Emerick Aubameyang.
Sanchez's firepower was not needed against an out-of-sorts Palace, which went behind after six minutes when Monreal headed in a corner by Granit Xhaka.
Monreal's afternoon came to a premature end later, though, when he limped off with a hamstring problem.
Hodgson said the opening spell from Arsenal was "scintillating", but added: "We were staring down the barrel of a gun after 24 minutes so the only thing I can take from the game is that we didn't throw the towel in, we didn't give up and in the second half we more than evened the game out".
Luka Milivojevic swivelled to drive in Palace's consolation in the 78th minute, but the damage was long since done.
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