Legally the taxability of both gifts depends upon nature of relationship.
Under section 56, there are certain relationships which do not form part of sprcified relatives vice-versa e.g Uncle-nephew. So you have to take care.
There will be no saving in his transaction as far as stamp duty is concerned unless the property lies in states like Maharashtra where stamp duty on gift transaction involving close specified relatives is levied at concessional rate.
For Income Tax purposes, it would, i say a very crude method. If the matter comes under scrutiny, the two gift transactions can be easily interlinked and their true nature can be revealed which will then not only result in tax liability but penalty also.
I would suggest that if it is indeed sale, go for proper sale transaction unless stamp duty incidence is higher and plan tax savings in legal manner.
Still, if you think that you can save stamp duty and capital gains tax by resorting to gifts, plan indirect gifts with a web of circular transactions.