Ralf Schumacher has suggested that Sebastian Vettel could be tempted back into Formula 1 in the future, despite his recent retirement.
The Aston Martin driver took part in his final race at the Abu Dhabi Grand Prix, after calling time on his F1 career.
In his column for Sky Sports Germany, ex-F1 driver Schumacher paid tribute to Vettel's achievements, and suggested that his heavy involvement in the bigger issues surrounding the sport could have taken a toll on the four-time World Champion.
"Sebastian Vettel is a four-time world champion who has achieved great things. Formula 1 will miss Sebastian Vettel as a person," wrote Schumacher.
"Unfortunately, things didn't go quite so well for him with Aston Martin. I would have wished differently for him.
"What else do I associate with Sebastian Vettel? In addition to sport, Sebastian had environmental protection high on his agenda.
"He took a very critical approach to this. Environmental protection is important, that's for sure, but he was sometimes very tough on a lot of issues that weren't always so easy in Formula 1."
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Schumacher: Experience makes Vettel an appealing driver
With many former F1 drivers having been tempted to return to the grid after their official retirement, it has caused many to wonder if Vettel could be interested in a return at some point in the future.
Schumacher continued to explain that Vettel's "vast experience" could cause teams to try and lure the 35-year-old back into the sport.
"A comeback by Sebastian in Formula 1 cannot be ruled out. You can see that now again with Nico Hulkenberg and also with Fernando Alonso, who is always keen to come back or to continue," added Schumacher.
"In Formula 1, there are many factors that lead to being fast. One of them is experience. New drivers take a long time to get to the level of a Sebastian Vettel.
"Sebastian, with his vast experience, already has the chance to come back in a year or two and race at the front.
"Whether he'll actually do that then, I don't know. Maybe after a year or two with his family he'll have the strength to make a comeback."
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