Mourinho lauds 'confident' Man Utd after Swansea thrashing
That is the opinion of pundit and former Arsenal defender Martin Keown.
Lukaku joined Manchester United from Everton for an initial fee of £75million in July.
However, Chelsea were linked with the Belgian first, three years after he first left the club for the Toffees.
Matic was allowed to leave Stamford Bridge by the Blues to join direct rivals United for £40million last month.
BT SPORT
Man Utd Transfer News: Romelu Lukaku and Nemanja Matic should be at Chelsea, says Keown
I thought they should both be at Chelsea
Martin Keown on Man Utd stars Romelu Lukaku and Nemanja Matic
The pair have started their United careers with a bang, helping them to back-to-back 4-0 wins over West Ham and Swansea.
But Keown says they should not be playing for the Old Trafford side.
“I thought they should both be at Chelsea,” Keown said on BT Sport.
BT SPORT
Man Utd Transfer News: Chelsea were wrong to sell Nemanja Matic, says Martin Keown
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“Surely Lukaku wanted to go back for unfinished business at Chelsea but the manager wasn’t interested.
“Matic should never have been allowed to leave Chelsea.
Mourinho has made all that happen, so everything he is doing now for me counts for double because of those signings he made.”
