Emery's appointment has somewhat polarised supporters, but Manchester City manager Guardiola believes that his fellow Spaniard has an outstanding CV.
"[Emery is a] top manager. His career speaks for itself," Guardiola told reporters, per Sky Sports. "He did it perfectly in Spain with many teams - Valencia, Sevilla - and he did really well in France.
"So, welcome to England. Another good manager is coming here."
Emery has faced Guardiola 10 times in his managerial career, but has never won, drawing four and losing six matches.
He has also failed to defeat Manchester United boss Jose Mourinho in five meetings, recording just one draw.
It remains to be seen if Emery can bridge the gap to the Manchester clubs, with Arsenal finishing a staggering 37 points behind champions City, and 18 points behind second-placed United in Arsene Wenger's final season at the club.