Stiliyan Petrov today admitted returning to Villa was 'too much, too soon' after he was forced to take a break.
The midfielder was appointed as assistant development coach in May after retiring from playing following his battle against acute leukaemia.
Petrov is in remission but has found he is not ready to return to full-time work alongside development coach Gordon Cowans.
He said: “I love my new role with the club, I love the involvement and I want to continue to make a valid contribution.
“In order to do this to the best of my ability I need to take some time away as I have found the day-to-day demands of the job to be just a little too much, too soon.
“The entire Villa family has been incredibly supportive and I am so grateful for this, as is Paulina and my close family circle.”
The 33-year-old, who made 219 appearances for Villa, said he will return once he is strong enough.
He said: “I intend to spend some time with my family and in six months or so we’ll assess how everything is then.
“Physically, I just need to build myself up some more before I can throw myself into things in the only way I know how, which is full-on commitment.
“I appreciate very much the understanding shown by the club.
“I have spoken to the manager and to the chief executive and they have been great in helping me to reach a decision which I feel is the right one while also reassuring me that the club will always be here for me, which I know in my heart.
“Thank you again to all of the fans and I will very much remain a part of the Villa family throughout the coming six months or so while I concentrate on getting stronger and, physically, being back to myself.”
Boss Paul Lambert, who played with Petrov at Celtic, offered his support and promised the club will always be there for him.
He said: “He’s totally aware of this and we’ll revisit things when he feels he is fully ready for that day-to-day involvement again.
“One thing is certain, he will always have a part to play at this football club and everyone at Aston Villa will echo that sentiment.”