The Aston Villa midfielder says any relegation fears would have influenced his decision to sign a new contract.
The 25-year-old signed a new four-and-a-half-year deal in January, as reported by Sky Sports, ending speculation over his future given that his old contract was set to expire in the summer.
His signing of a new contract also came as a boost to the side, who are currently in the Premier League relegation zone and have replaced manager Paul Lambert with former Tottenham boss Tim Sherwood.
Now, Delph has said that he would never have signed a new contract if he believed Villa could go down.
"When I signed my contract there wasn't a thought in my mind that relegation was going to happen," said Delph.
"If that was the case, you'd have argued that I wouldn't have signed the contract."
Delph signed for Villa from Leeds in 2009 in a high profile transfer and had been linked with a number of clubs when his contract was set to expire in the summer - as reported by the Daily Mirror.
However, he insists that Villa can remain in the Premier League this season, despite their troubles so far, believing that their experience of similar situations in the recent past, and belief in their own ability, will see them safe.
"When I signed we were trying to get into the top four but I've been in relegation battles since I've been a regular starter here, which isn't something I am proud of," he added.
"Each year, we've crossed the line and got through and I don't see this year being any different. We're confident in our own abilities and I'm 100% certain we will get over the line.”