3. Tadhg Furlong – Tighthead-prop
This is speculative, but the Irishman, who is widely regarded as the best tighthead in the world, will be out of contract with Leinster and the IRFU at the end of the 2020/21 season after last extending his contract in 2018.
Ever since he made his provincial debut for Leinster in 2013, Furlong has taken the rugby world by storm with his all-action presence. He has a real turn of speed and can pop up in so many unexpected places to carry the game to the opposition himself or to put a teammate into a threatening position.
If you want to be a title contender, you need a strong pack, and signing world-class players will only give you a better chance of competing at the very, very top. .