I believe he knew of you. [ Saber is nothing if not observant, and she wasn't totally blind to some of the nuances both Arturia and Archer seemed to have to each other when they spoke of the one another.

And then... ]

Around Christmas time, I saw him carving a fine blade out of oak. He denied it was for me, nor did he give me an answer on who it was for, but...

[ She watches Arturia's reaction. It was an indirect question of: did you get that or no? ]