You have built the following interest rate tree for the next $2$ years:

Time $0(\%)$ Time $1(\%)$

i$2$h $=3\mathrm{.}97$

i$1=2\mathrm{.}97$

i$2$l $=1\mathrm{.}01$

What is the value of the embedded call option in a default$-$free $4\mathrm{.}67\%2-$year bond which is callable at par in $1$ year, based on this information?