Both Arsenal and United are being linked with the youngster this month.
And the Gunners could well find it hard to secure his signature following on from Caicedo previously admitting his desire to play for the Red Devils.
Speaking to The Athletic last year, Caicedo admitted: "My dream is to play for Manchester United. Antonio Valencia is an example to follow. With his strength and dedication, he was able to get to that level.
"That motivates me to keep working hard and do the right things."
United look closely at Caicedo last year before he made his move to Brighton and is now ready to try for the youngster.