Ince and Mark Hughes are both close to being axed, according to reports.
Venables said in his column in the Sun: “We’re at that time of the season when quite a few managers get the sack.
“Chairmen have to be strong and make the right decision.
“Fans often like a change but the right decision is normally to stick with the manager.
“Sacking someone is a too-easy solution. When it’s easy, it’s often the wrong one.
“Sometimes, a manager doesn’t always lose the players — the players can lose the manager as we saw with Roy Keane.
“Looking at the Premier League right now, Blackburn’s Paul Ince seems to have a bit of a problem along with Mark Hughes at Manchester City.
“Ince did well at Macclesfield and MK Dons and is still adjusting while Hughes impressed with Wales and Blackburn. I think he could turn City into a Champions League club but he needs time. And he needs to be in complete control.
“It’s not tough to sack someone, it’s tough to make the right decision. Getting it right is the hard part. That’s where you need to be single-minded.
“The chairmen at these clubs have to be big and, if that means resisting pressure from fans, then so be it.”