Having played in the Confederations Cup up until the final on July 2, Sanchez was given an extended summer break which included missing Sunday's Community Shield penalty win over Chelsea. "He had a little abdominal strain that he caught in training on Sunday morning before he came to Wembley".
Although Wenger admitted that entering the new campaign without Sanchez is a big blow for Arsenal, he pointed out that the striker would not have featured against Leicester even if he had not sustained the injury.
Speaking about the process on Sky Sports, Gazidis said: "We're in a society now where we are encouraged to throw away the old and buy the new thing which will make you happy and solve your issues. He had a scan two days ago and he's out for a while", The Guardian quoted Wenger as saying. Personally I think he is a hugely talented player, he's on the way up and he will continue to move up because the potential is there.
"Then we need to transform the quality of the preparation into points and that is, of course, a pragmatic view, but what matters is we win the next game and start in a strong way, which we didn't do previous year".
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Speaking in an exclusive interview with ESPN FC, the BT Sport pundit said: "The mentality has got to improve". " Chelsea are weaker than last season - no Diego Costa , no Matic - and I'm concerned for them".
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Speaking in an exclusive interview with ESPN FC, the BT Sport pundit said: "The mentality has got to improve". I have to try to adapt a new system and to anticipate playing with nine or 10 men in the next game.
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But Mourinho was nevertheless impressed with his former Chelsea charge: "I think he played really well, I think in the moment they were moving the ball well of course was hard for us in the midfield". "He's going to strengthen Manchester United ".
"We haven't been able to beat them yet but there's always a first time and it would be nice to think it would be Friday night. He is focused. Of course when you have treatment on a medical bench, it's not easy".
The French tactician also admitted Aaron Ramsey, Mesut Ozil and Per Mertesacker could all miss out. "I just think we are not open - what I said to you many times - to any offers, anyway".
The Gunners were without a host of players including Ozil, Sanchez and Ramsey - all of whom have niggles ahead of their season opener against Leicester City on Friday.
After nearly 12 months of speculation surrounding Sanchez's future the end-game doesn't appear to be in sight.