Wenger hopes Mkhitaryan, who scored five goals in 39 Premier League appearances for United, can find the net frequently and add creativity alongside Mesut Ozil, another player whose future at Emirates Stadium is uncertain amid protracted contract negotiations.
Earlier Sunday, Sanchez posted a video on Instagram showing him walking across an airstrip towards a private jet.
His move to United was celebrated in his homeland, where fans on social media lauded the Red Devils' "winning" mentality, in contrast to the paucity of recent success at Arsenal.
"The thinking behind the deal is that we have player who has four months contract basically and we move [him] out for free and in exchange we have a player in Mkhitaryan who has a three-and-a-half-year contract", Wenger told Arsenal Player. His transfer is expected to be formally announced soon. After that, I accept that because we accepted that we would let him go.
Former England captain Alan Shearer said City could rue missing out on Sanchez.
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Most disconcerting of all perhaps is that numerous children had no idea what a police officer was, and had no concept of medicine. Home-schooling parents make great personal sacrifice to bear the financial and emotional cost of educating our children at home.
"He's a very professional player who has been committed until the last minute", Wenger said.
Mourinho's side, in second place, temporarily reduced City's lead at the top to nine points before Pep Guardiola's men re-established a 12-point cushion by beating Newcastle United. It is not losing players - teams are used to losing players. But the deal is a big boost for their closest rivals.
Last season, as it became increasingly clear that Arsenal wouldn't be his club for much longer, Sanchez was regularly seen remonstrating with his teammates, who - in his eyes - weren't matching his will to win.
The form of Anthony Martial means many United fans are anxious that Sanchez may be played on the left, over the Frenchman and Marcus Rashford.
On average, Mkhitaryan completes 51.47 passes per Premier League match compared to Sanchez's 48.16, while his ball retention is also significantly better. His transfer dealings this January have allowed me to flawless the spelling of both Henrikh Mkhitaryan and Pierre-Emerick Aubameyang, neither easy names to spell.