Arsenal hero Martin Keown is worried about their deal for David Luiz.
Keown fears his old club have done Chelsea a favour by paying 8million for the Brazilian.
He told TalkSPORT on Friday: I was concerned and I made my feelings known at the time.
I felt that we'd be taking a problem from Chelsea.
Frank Lampard was in that dressing room wasn't he, and you could say it was a little bit toxic.
"Sarri last year said they were difficult to motivate, and it looks like Lampard has weeded out David Luiz.
Arsenal are then taking a player with a little bit of baggage."
