Mkhitaryan failed to establish himself at United following a reported £26.3million move from Borussia Dortmund in 2016 and has been traded for Chile global Sanchez, whose contract at the Emirates Stadium was set to expire at the end of the season.
"Manchester United signing Alexis Sanchez is similar to Robin van Persie in the sense that they're getting a ready-made superstar and you're seeing the contribution already with Anthony Martial upping his performances", new Wales manager Giggs said on skysports.com.
Sanchez was at Carrington on Sunday to complete a medical as the transfer neared completion.
Alexis Sanchez is nearly certainly going to pass his medical at Manchester United, the Chilean global has been fit this term, and was playing well during the early stages of the season.
Manchester City were reported to be in the hunt for Sanchez, but he'll now have his opportunity to help the Red Devils hound down the 12-point void that separates the two rivals. So close, so close, so close, if it doesn't happen it is not going to happen.
"You look to the attacking areas and we need that extra competitive internal competition but more solutions for us so let's see".
"Mkhitaryan can play on the wing or in midfield, so I believe he can play very well in many positions", said Wenger.
GETTYAlexis Sanchez and Theo Walcott have both left Arsenal this month
Arsene Wenger has revealed how the protracted saga of Alexis Sanchez's future cast a cloud of uncertainty over the Arsenal dressing room.
"He will bring his ambition, drive and personality, qualities that make a Manchester United player and a player that makes the team stronger and the supporters proud of their club dimension and prestige".
"Have I spoken to the player yet? No".
Armenia worldwide winger Mkhitaryan, also 29, fell out of favour with United manager Mourinho after just 18 months at Old Trafford.
The Armenian has had his moments, and played a crucial role in United's Europa League triumph last season, but has found himself on the outside looking in for Jose Mourinho this season.
"I really like to play down the left, through the middle but to tell you the truth, as long as I'm playing football, I'll fit in anywhere".
Reports in Germany say striker Pierre-Emerick Aubameyang could be on his way to Arsenal from Borussia Dortmund.
Venezuela's Maduro says ready to run for second term
The order tasks the pro-government National Electoral Council with setting the precise date for the upcoming presidential vote. The bill was raised by the representative Diosdado Cabello, number two in the United Socialist Party of Venezuela (PSUV).
Gas prices still inching up in northern New England
On Monday afternoon, the average price of a gallon of regular gas in OH was $2.39, while last week's average was $2.47. Oil prices dipped after EIA's latest petroleum revealed domestic crude production in the US continues to grow.
Catalan separatist leader in Copenhagen: Spain wants him arrested
Spain's Supreme Court dropped an arrest warrant in December but the prosecutor applied for it to be reissued on Monday. Puigdemont moved to Brussels at end of October with five of his advisors, although two of m returned to Spain.