The brothers had been attracting interest from French clubs after big performances for club and country.
"The offers were tempting in one sense, but we never really swayed towards them," Thom explained in The Telegraph. "The money can throw you because it really is staggering the amounts the French clubs can offer now.
"But taking everything into account – going to a new place, possibly learning French, being away from the national coaches who can come to you and give you advice on what you have to work on – I felt I was not happy to move. As tempting as the offers were in terms of money it didn't make up for everything else.
"The money got sillier as I went back and pretty much told them I was going to stay. They tried to sway me but my mind was made up. A lot of people say money isn't everything, and it genuinely isn't at the moment. We still have long careers ahead of us and we wanted to do what we thought was best for both of us."