Jim Rogers , an influential investor, said he will sell his dollar assets into any rally as the greenback loses it status of world reserve currency, calling the Chinese yuan the "safest investment". 

He described commodities as a "big bubble", although one that had much longer to run, advising short-term caution on gold. 

"Don't put all your eggs in the US dollar," said Rogers at a conference. 

"I happen to own some dollar at the moment, but only because it is so beaten down...If everybody is negative on it, including me, it's time to rally. If the dollar rallies, I suspect I'll sell all my US dollars and put my money in other currencies." 

Rogers said he would sell and take a loss even if the rally failed to materialise. 

He expected the Chinese yuan to rise in the next few years. "The Chinese yuan has been too low, either artificial or not. It doesn't matter. In fact I'm buying some renminbi this afternoon." 

He also favours currencies from countries with well-managed natural resources, such as Canada and Australia. 

Rogers warned about an imminent end of the bull run in the bond market, which he said may enter a long period of decline. 

Rogers, a known commodities bull, said he had sold short shares in most emerging markets as well as American technology stocks, and has commodities and currencies as his main portfolio. 

Declining supplies in commodities, including food, oil and minerals, together with growing demand mainly from emerging economies, will continue to push prices of commodities prices higher until 2018 or 2020, he said.