Aston Villa boss Tim Sherwood urges Christian Benteke to follow Fabian Delph's lead and commit his future to the club.
Bournemouth manager Eddie Howe has vowed to give his promotion heroes the chance to shine in the Premier League.
The former Manchester United and Newcastle United full-back was settling in to life back in the Premier League at Loftus Road.
He has, however, now linked up with a side promoted alongside QPR in 2013/14.
Simpson thought he had done enough to secure a long-term future in the capital, but found himself edged out by the arrival of Mauricio Isla.
The 27-year-old is now looking forward to opening a new chapter at the King Power Stadium, with there likely to be more top flight opportunities for him working under Nigel Pearson.
Simpson said: "I was quite surprised when Harry Redknapp pulled me into his office and said Leicester had made an enquiry and that he was happy to let me go.
"I had enjoyed a good pre-season and was ready to hit the ground running in the Premier League, so it was a little bit of a shock after the year I'd had.
"I thought about what he said and decided I wanted to play for Leicester City and improve my opportunity for first-team football.
"Harry's brought in a lot of players, so you have to respect his decision. However, I am ready to push on with Leicester now and work as hard as I possibly can."