His talent is not in question. Yet ups and downs in form mean Franklin has played just 30 of New Zealand's 93 tests since his March 2001 debut.
Franklin averages 21.21 with the bat, while his 81 wickets have cost 33.77 each. Those numbers don't do justice to his abilities and he knows he must deliver as one of the senior figures in a New Zealand side short on experience.
''I'm not a newbie. I've been around a wee while," he said.
''The likes of myself, Jeetan Patel and Chris Martin are the older guys and it's important if we do get opportunities in this test we stand up and make contributions that hopefully mean we're in the fight and in with a chance of winning come later in the test."
Franklin is expected to bat No 7 and be the fourth seamer. The role may require some blocking up of an end, but he'd like to think, if the ball is swinging, he gets a chance in favourable conditions.
He has worked hard on his bowling with new specialist coach Shane Bond, and is happy with progress. A four-wicket bag for Wellington in their win over Central Districts early in December left him feeling he was heading in the right direction.
Technical issues had been causing some difficulties, mainly around the use of his front, or non-bowling, arm, getting through the crease better and getting more of his body behind the ball at the point of delivery.
''I've got a little more energy in my runup," he said.
''I've played around with a short and long runup in the last few years but I've gone back to the long runup because I felt I got better rhythm and momentum to the crease. All those little things, hopefully, add up to improvements in the bowling."
New Zealand will be hoping so. With seam bowling spearhead Tim Southee missing through injury, they will need all hands to the fast-medium pump.
Franklin has done the business in South Africa before. A late-career return to form will be a boost for a touring group facing a tall order against the world's best team.