has slammed Arsenal boss Mikel Arteta after former captain Pierre-Emerick Aubameyang was snapped up by rivals .
The 33-year-old ex-Arsenal striker , following January’s controversial exit from north  in which he fell out with boss Mikel Arteta and was stripped of the club’s captaincy over disciplinary issues.
He moved to Barcelona and his goals helped Xavi’s side qualify for the  last term but the club’s perilous financial plight – added with the arrival of Robert Lewandowski – prompted them to cash in on him just six months after he arrived and the Gabon forward has now returned to England.
Aubameyang, who scored 92 goals across 163 games for Arsenal, signed a two-year contract at Chelsea and will once again link up with boss Thomas Tuchel after the pair worked together at Borussia Dortmund.
‘I watched the whole Amazon documentary [All or Nothing: Arsenal] and I am still not convinced about the whole Aubameyang thing,’ Morgan told .
‘The idea that it has been good for Arsenal… That we send him for nothing to Barcelona, he bangs in goals for fun at one of the biggest teams in the world.
‘Then a few months later he signs for Chelsea for £12m plus a top player [Marcos Alonso]… we get none of that. Now he will lead the line for Chelsea.
‘The fact he has gone back to work with Thomas Tuchel, it confirms to me that Mikel Arteta is a rookie manager and did not know how to manage proper world-class talent.’
, with the two London sides set to meet on November 5 at Stamford Bridge.
Arsenal were beaten 3-1 by Manchester United on Sunday as their perfect start to the season came to an end, but Morgan feels that Arteta is ‘growing’ as a manager.
‘I think the transfer business in the last window was excellent,’ he added. ‘Arteta is growing as manager. The fans believe in him and the players clearly believe in him.
‘There’s clearly been improvement and Arsenal are in a much better position now, so I am happy to start trusting this process.
‘Then again, we faced our first tough game of the season and we lost. The jury is still out, but I think the jury is feeling warmer to him than they were.’
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