In May, Federer announced he would not play at the French Open, skipping the entire clay court season to “try and play on the ATP World Tour for many years to come”.
And the decision was justified as Federer returned for the grass court season and on at Halle and Wimbledon.
Federer’s attempts to prolong his career while in his tweet came after an injury-hit 2016 which required him to undergo knee surgery for the first time in his career.
Given his success this year, it’s possible Federer may opt not to play on clay in 2018 as well.
Though Henman is unsure what Federer will ultimately do, he reckons it is possible the 36-year-old might have an even busier schedule.
Henman told Express Sport: “I don’t know. Your guess is as good as mine. I think he’ll have to see how his body is.
“He’s already talked about how he feels that he’ll need to play a little bit more in 2018 because even he couldn’t quite believe that he can play so well and win so many big events as he did in 2017.”
Henman reckons Federer and Rafael Nadal are favourites for next month’s Australian Open and predicts 2018 could see the return of the big four with Novak Djokovic and Andy Murray nearing a comeback.
He added: “For me Federer and Nadal are the favourites [for the Australian Open].
“It’s a role reversal from the end of the 2016 when [Andy] Murray and [Novak] Djokovic were head and shoulders above the rest and Federer and Nadal had been injured and there were question marks.
“So definitely the question marks are [now] over Djokovic and Murray and fingers crossed they are both fit and healthy in 2018 because both if that’s the case there’s that great rivalry on the horizon of the big four.”