"Surprised, very surprised. I've not heard it before", he said. "An Arsenal team as good as that punishes a lot of teams and punishes a lot of teams on their soil. There was a spirited recovery by the players that is forgotten about when you see 5-1 but we need to react properly".
Eliaquim Mangala endured a frustrating debut, and Allardyce could drop him from the starting line-up on Saturday.
"You have to welcome new players and they have only come in to strengthen the team", he said.
"The first goal was a long goal kick that got headed up into the air and the second centre-back got caught on the wrong side of Sigurdsson, dived in to challenge and Sigurdsson skipped past him, then [James] Tomkins went for the block and it deflected in. The only way I stop is that or if I don't keep my job".
And with the points sealed, Sam Allardyce drafted on his French midfielder for the remaining 10 minutes though to the frustration of the home fans who booed his introduction.
Former defender Unsworth ended his lengthy playing career in 2009 and began coaching with Preston North End and Sheffield United before returning for a third stint at Goodison Park, where he initially served as assistant to Under-21 chief Alan Stubbs before taking over the youth setup following the latter's departure to Hibernian.
Unified Korean ice hockey team proves that 'winning isn't everything'
Babilina Hwang, a visiting professor at Georgetown, told CNN that "Kim Yo Jong is the ideal counterpart to (Ivanka Trump). Navy, and in early 1953 was assigned to Task Force 77 as a petty officer aboard a ship patrolling the North Korean coast.
"It is not related to the broken leg he suffered".
It's looking very likely he will achieve that goal, with Everton sitting comfortably now in ninth place in the table.
Allardyce took over from Ronald Koeman when the club were nestled in the relegation zone but "Big Sam" turned their fortunes around with a seven-match unbeaten streak. "We need to focus on our own form".
"Cenk is direct competition for me at the top of the pitch, so, hopefully, that will push us both on to do better and score goals".
'They have been very good and very resilient (starting) from a hard position.