Rangers have been without a permanent head coach since sacking Pedro Caixinha two weeks ago, and names like Alan Pardew, Derek McInnes and recently Giovanni Van Bronkhorst have all been mentioned as possible candidates.
And now it seems de Boer could be in the reckoning too, as he looks to get his managerial career back on track after disastrous spells at Inter Milan and Crystal Palace.
After leading Ajax to four consecutive Dutch titles, de Boer was one of Europe’s hottest properties, which led him to the San Siro, but his stint in charge of the Serie A giants lasted just 85 days.
He was then given his marching orders by Palace after managing just four matches but it seems he could be about to try again with Rangers.
Speaking to BBC Scotland, via the Evening Times, Ronald said: “The Dutch team will be one of Frank’s things ‘to do,’ but if a big club came knocking on the door that would be very difficult to say no to.
“It would be the same with Rangers, he would think about it for sure, he had a great time there although it was a short spell.
“I don’t know. Rangers is a challenge, it’s a hell of a task as we have seen over the last few years that there is no stopping Celtic, so it is a challenge.
“But, I don’t know if he is, at this moment, ready to take that challenge.”
Both brother turned out for Rangers during their playing days – so could Frank be the answer to the Govan club’s problems?
What do you think?